{"title":"New Acquisitions","description":null,"products":[{"product_id":"scheelite-with-wolframite","title":"Scheelite with Wolframite - Tae Hwa Mine, Chungju, South Korea","description":"\u003cp\u003eAn attractive \u003cstrong\u003escheelite with wolframite\u003c\/strong\u003e specimen from the \u003cstrong\u003eTae Hwa Mine in Chungju, South Korea\u003c\/strong\u003e. The piece is dominated by a prominent, well-formed scheelite crystal displaying warm honey-brown to golden-brown coloration, good lustre, and sharply defined crystal faces. Its elevated position on the contrasting pale matrix gives the crystal an especially strong display profile. \u003cbr\u003eBlack wolframite is also present, creating an interesting association of two important tungsten-bearing minerals on a single specimen. The dark wolframite provides additional contrast against both the golden scheelite and light-coloured matrix, while the compact, upright form allows the specimen to display particularly well.\u003cbr\u003eThe Tae Hwa Mine is a notable South Korean tungsten locality, and specimens combining crystallized scheelite and wolframite are of particular mineralogical interest. Mounted on a clear acrylic display base.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMineral:\u003c\/strong\u003e Scheelite with Wolframite\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Tae Hwa Mine, Chungju, South Korea\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Tetragonal (Scheelite)\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Tungstates\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Bill Rouslin Collection; Ex C. Stoufer Collection\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 5 × 3 × 2.5 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52720077242650,"sku":null,"price":500.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/scheelite-wolframite-tae-hwa-mine-south-korea-02.jpg?v=1787766134"},{"product_id":"marcasite-starkville-mississippi-usa","title":"Marcasite - Starkville, Mississippi, USA","description":"\u003cp\u003eAn attractive \u003cstrong\u003emarcasite \u003c\/strong\u003ecrystal specimen from\u003cstrong\u003e Starkville, Mississippi, USA\u003c\/strong\u003e, featuring a dense cluster of sharply formed metallic crystals arranged in a striking three-dimensional formation. These crystals are found in the Selma Chalk exposed by excavation in numerous sites near Starkville. \u003cbr\u003eThis particularly nice specimen displays the characteristic brassy-grey to metallic coloration of marcasite, with numerous pointed and bladed crystals showing distinctive textured and striated surfaces. The tightly intergrown crystals create an intricate sculptural appearance, with individual terminations projecting in multiple directions. I have had this specimen for a year or two and there has been no evidence of any disintegration that some marcasite is susceptible to. This is a nice, sturdy little specimen!\u003cbr\u003eMounted on a clear acrylic display base, this specimen presents beautifully from several angles and was recently acquired from my friend and fellow Calgarian, Steve Potvin.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMineral:\u003c\/strong\u003e Marcasite\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Starkville, Mississippi, USA\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Orthorhombic\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Sulphides\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Steve Potvin Collection\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 2.7 x 3.5 2.5 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52721033838874,"sku":null,"price":100.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/marcasite01.jpg?v=1787769050"},{"product_id":"smithsonite-sierra-mojado-coahulla-mexico","title":"Smithsonite - Sierra Mojada, Coahuila, Mexico","description":"\u003cp\u003eAn attractive \u003cstrong\u003esmithsonite \u003c\/strong\u003especimen from\u003cstrong\u003e Sierra Mojada, Coahuila, Mexico\u003c\/strong\u003e, a classic Mexican locality known for producing collectible lead minerals. \u003cbr\u003eThis piece features pale white to very light bluish-gray smithsonite with a smooth, rounded botryoidal form and softly lustrous surface (sometimes described as \"turkey fat\"!). Subtle pink tones visible around portions of the specimen provide an appealing contrast and add visual interest. Changes to a pleasing yellow when exposed to short wave ultraviolet light.\u003c\/p\u003e\n\u003cp\u003eFrom my friend and colleague, Rob Belcher.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMineral:\u003c\/strong\u003e Smithsonite\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Sierra Mojada, Coahuila, Mexico\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Trigonal\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Carbonates\u003cbr\u003e\u003cstrong\u003eShort Wave Ultraviolet response:\u003c\/strong\u003e Yellow\u003cbr\u003e\u003cstrong\u003eProvenance: \u003c\/strong\u003eEx Rob Belcher (The Aesthetics Underground)\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 4 x 10 x 6 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52729571606810,"sku":null,"price":150.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/smithsonite02.jpg?v=1787770181"},{"product_id":"freibergite-with-pyrite-eagle-mine-gilman-colorado-usa","title":"Freibergite with Pyrite - Eagle Mine, Gilman, Colorado, USA","description":"\u003cp\u003eAn attractive \u003cstrong\u003efreibergite with pyrite \u003c\/strong\u003especimen from the historic \u003cstrong\u003eEagle Mine in Gilman, Colorado, USA\u003c\/strong\u003e. The piece features abundant metallic mineralization, with steel-gray to dark metallic freibergite accompanied by contrasting brassy-gold pyrite. Other species may be present.\u003c\/p\u003e\n\u003cp\u003eThe densely intergrown crystals create a highly textured, sparkling surface, with numerous reflective crystal faces visible across the specimen. The contrasting metallic tones and complex crystal coverage make this an interesting example from a classic Colorado mining locality.\u003c\/p\u003e\n\u003cp\u003eFreibergite is a complex mineral containing silver, copper, iron, antimony and arsenic, first identified in Freiberg, Germany. According to Mindat.org, there has been recent considerable discussion on whether the species is a valid mineral or part of several different solid solution series with tetrahedrite and tennantite. So for those who are quite particular about IMA mineral names, Mindat recommends labelling specimens \"Freibergite Subgroup\" of the Tetrahedrite Group.\u003c\/p\u003e\n\u003cp\u003eThe specimen comes from the estate of the late Mike Clark who was born and raised in Colorado and later moved to Calgary, Canada. Mike obtained the specimen from The Rock Hut, Leadville, Colorado evidenced by the older label accompanying the specimen. I would estimate the specimen was acquired by Mike prior to 1990.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinerals:\u003c\/strong\u003e Freibergite, Pyrite\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Eagle Mine, Gilman, Colorado, USA\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Cubic (Isometric)\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Sulfosalt\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Mike Clark Collection (acquired from The Rock Hut, Leadville, Colorado)\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 3 cm x 7 cm x 8 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52729835454746,"sku":null,"price":135.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Freibergite_with_pyrite_from_Eagle_Mine_Gilman_Colorado_USA02.jpg?v=1787856990"},{"product_id":"cosalite-with-native-gold-in-quartz-cariboo-gold-quartz-mine-british-columbia","title":"Cosalite with Native Gold in Quartz - Cariboo Gold Quartz Mine, British Columbia, Canada","description":"\u003cp\u003e\u003cspan\u003eThis Canadian specimen features metallic \u003cstrong\u003ecosalite\u003c\/strong\u003e with \u003cstrong\u003enative gold \u003c\/strong\u003eand\u003cstrong\u003e pyrite\u003c\/strong\u003e in a white \u003cstrong\u003equartz matrix\u003c\/strong\u003e. The cosalite form silvery-grey lathes and, along with brassy pyrite, dominates across the white quartz, creating strong contrast. Some of the cosalite lathes are quite broad and others better described as needle-like. Native gold is sprinkled about on several sides of the specimen creating a classic specimen from a classic locality.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCosalite is an uncommon lead-bismuth sulfosalt for which the \u003cstrong\u003eCariboo Gold Quartz Mine\u003c\/strong\u003e is a significant Canadian locality. The mine is situated near Wells in British Columbia’s historic Cariboo Mining Division and is known for gold-bearing quartz veins containing cosalite and other sulphide and sulfosalt minerals.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe specimen has documented provenance from Calgarian Mike Clark who obtained it from his close colleague and friend, Mike Evick. Both were dedicated field collectors who focused on western Canadian minerals. This specimen, however, was probably unearthed long before the two Mikes were on the scene. It is believed most cosalite specimens from the Cariboo Quartz Mine were collected by a miner in the 1940s and have been slowly changing hands ever since. These are all historical pieces in my opinion and this is a particularly nice example.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMineral:\u003c\/strong\u003e Cosalite with Native Gold in Quartz\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Cariboo Gold Quartz Mine, Wells, British Columbia, Canada\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Orthorhombic (Cosalite)\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Sulfosalts\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Mike Clark Collection; Ex Mike Evick Collection\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 5.5 × 4.5 × 4 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52741930746138,"sku":null,"price":375.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/cosalite-gold-quartz-cariboo-mine-02.jpg?v=1787771792"},{"product_id":"mimetite-on-calcite-santa-eulalia-chihuahua-mexico","title":"Mimetite on Calcite - Santa Eulalia, Chihuahua, Mexico","description":"\u003cp\u003e\u003cspan\u003eAn attractive cluster of lustrous golden-yellow to honey-brown \u003cstrong\u003emimetite\u003c\/strong\u003e crystals over pale pink \u003cstrong\u003ecalcite \u003c\/strong\u003eon limonitic matrix. The contrasting colours and sparkling crystal surfaces give the specimen strong visual appeal from several viewing angles.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMimetite is a lead arsenate mineral commonly formed in the oxidized zones of lead-bearing deposits. \u003cstrong\u003eThe Santa Eulalia Mining District\u003c\/strong\u003e is a classic Mexican locality known for producing quality mimetite specimens such as this.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMineral:\u003c\/strong\u003e Mimetite on Calcite with Limonite\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Santa Eulalia Mining District, Aquiles Serdán Municipality, Chihuahua, Mexico\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Hexagonal\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Phosphates, Arsenates \u0026amp; Vanadates\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Bill Rouslin Collection\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 5.5 × 4.5 × 4 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52741946671386,"sku":null,"price":100.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/mimetite-calcite-santa-eulalia-mexico-02.jpg?v=1787690088"},{"product_id":"calcite-on-basalt-zhejiang-province-china","title":"Spherical Calcite on Basalt - Zhejiang Province, China","description":"\u003cp\u003e\u003cspan\u003eAn unusual and sculptural \u003cstrong\u003eChinese\u003c\/strong\u003e specimen featuring rounded, pale yellow \u003cstrong\u003ecalcite\u003c\/strong\u003e formations within dark brown basalt matrix. Several large spherical aggregates are accompanied by numerous smaller rounded growths across the cavity surface, creating an intriguing landscape-like appearance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe calcite formed as secondary mineralization within cavities in the volcanic basalt. Its soft yellow colour and textured surfaces contrast strongly with the dark, rugged matrix. This is certainly an eye-catching piece and was recently part of Steve Potvin's extensive calcite collection.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eMineral:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Calcite\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eLocality:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Zhejiang Province, China\u003cbr\u003e\u003c\/span\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Trigonal\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eMineral Class: \u003c\/span\u003e\u003c\/strong\u003eCarbonates\u003cstrong\u003e\u003cspan\u003e\u003cbr\u003eProvenance:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Ex Steve Potvin Collection\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eDimensions:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 8 × 4.5 × 5 cm\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52742040715546,"sku":null,"price":125.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/spherical-calcite-basalt-zhejiang-china-01.jpg?v=1787693445"},{"product_id":"ram-s-horn-selenite-mariposa-mine-texas","title":"Ram’s Horn Selenite - Mariposa Mine, Texas, USA","description":"\u003cp\u003e\u003cspan\u003eA remarkable white to translucent \u003cstrong\u003eselenite\u003c\/strong\u003e crystal displaying the dramatic curved growth habit known as \u003cstrong\u003e“Ram’s Horn\".\u003c\/strong\u003e The elongated crystal sweeps upward in a graceful arc, with pronounced parallel striations running along its surface and a smaller crystal projecting near the upper termination.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSelenite is the transparent crystalline variety of gypsum. Ram’s Horn specimens are distinguished by their unusual curved or coiled growth, and the\u003cstrong\u003e Mariposa Mine\u003c\/strong\u003e is a classic \u003cstrong\u003eTexas locality\u003c\/strong\u003e for this sculptural habit. The mine is part of the historic Terlingua Mercury District in Brewster County.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis specimen comes from the Bill Rouslin Collection, where it was recorded as specimen #779. It is also accompanied by older Schortmann’s Minerals and Charles B. Ward labels, preserving additional documentation from its collection history. The specimen is presented on an acrylic display base.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eMineral:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Gypsum (variety Selenite)\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eLocality:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Mariposa Mine, California Hill, Terlingua Mercury District, Brewster Co, Texas, USA\u003cbr\u003e\u003c\/span\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e monoclinic\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eProvenance:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Ex Bill Rouslin Collection\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eDimensions:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 11 cm long\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52742138102042,"sku":null,"price":200.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/rams-horn-selenite-mariposa-mine-texas-01.jpg?v=1787696711"},{"product_id":"peach-stilbite-ca-jalgaon-maharashtra-india","title":"Stilbite - Jalgaon, Maharashtra, India","description":"\u003cp\u003e\u003cspan\u003eA beautiful cluster of peach to salmon-pink \u003cstrong\u003estilbite-Ca\u003c\/strong\u003e crystals arranged in broad radiating fans and sheaf-like formations. The overlapping bladed crystals display a soft pearly lustre, delicate parallel growth lines and an attractive sculptural form. Those who have seen this piece in person describe it as resembling a bushel of wheat or a bunch of broccoli or even a mushroom cloud explosion. What do you see?\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe\u003cstrong\u003e Jalgaon District\u003c\/strong\u003e is a classic locality within India’s Deccan volcanic province and is internationally known for producing exceptional zeolite specimens such as this. Stilbite-Ca from this region commonly develops in radiating sheaves, bow-ties and rosettes within cavities in basalt.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe accompanying collection label uses the traditional name “stilbite”, however it is more specifically catalogued as stilbite-Ca under current IMA naming conventions. This specimen comes from the Bill Rouslin Collection, where it was recorded as specimen #989. Additional dealer labels, including one from Treasure Mountain Mining, are included.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eMineral:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Stilbite-Ca\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eCrystal System: \u003c\/b\u003eMonoclinic (pseudo-orthorhombic)\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003cstrong\u003e\u003cspan\u003eMineral Class: \u003c\/span\u003e\u003c\/strong\u003eTectosilicates (Zeolite Group)\u003cstrong\u003e\u003cspan\u003e\u003cbr\u003eLocality:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Jalgaon District, Nashik Division, Maharashtra, India\u003cbr\u003e\u003c\/span\u003e\u003cstrong\u003eShort Wave Ultraviolet response\u003c\/strong\u003e: Yellow-brown\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eProvenance:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Ex Bill Rouslin Collection\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eAdditional labels:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Treasure Mountain Mining and another earlier dealer label\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eDimensions:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 9 cm × 9 cm\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52742202163482,"sku":null,"price":250.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/peach-stilbite-ca-jalgaon-india-01.jpg?v=1787697544"},{"product_id":"vesuvianite-sierra-de-cruces-coahuila-mexico","title":"Vesuvianite - Sierra de Cruces, Coahuila, Mexico","description":"\u003cp\u003e\u003cspan\u003eA substantial golden-brown \u003cstrong\u003evesuvianite\u003c\/strong\u003e crystal with a robust, blocky form and strongly developed growth surfaces. The crystal ranges from translucent honey-yellow along its edges to deeper brown through the thicker interior, with stepped textures and a bright vitreous to resinous lustre.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe accompanying historic labels identify the locality as \u003cstrong\u003e“Laguna de Jaco, Chihuahua.”\u003c\/strong\u003e This is a well-known older locality attribution used for Mexican vesuvianite and grossular specimens. Modern locality research places this material at Sierra de Cruces, east of Laguna de Jaco, near Hércules in Coahuila, Mexico.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis specimen comes from the Bill Rouslin Collection, where it was recorded as specimen #695. It is accompanied by the Laguna de Jaco collection label and an earlier label numbered SAM168.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eMineral:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Vesuvianite (Idocrase)\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eCorrected locality:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Sierra de Cruces, east of Laguna de Jaco, near Hércules, Sierra Mojada Municipality, Coahuila, Mexico\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eHistoric label locality:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Laguna de Jaco, Chihuahua, Mexico\u003cbr\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eCrystal System: \u003c\/span\u003e\u003c\/strong\u003eTetragonal\u003cstrong\u003e\u003cspan\u003e\u003cbr\u003eMineral Class: \u003c\/span\u003e\u003c\/strong\u003eSorosilicate\u003cstrong\u003e\u003cspan\u003e\u003cbr\u003eProvenance:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Ex Bill Rouslin Collection\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eEarlier label:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e SAM168\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eDimensions:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 5.5 cm × 3.5 cm × 4 cm\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52742241485082,"sku":null,"price":85.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/vesuvianite-sierra-de-cruces-mexico-01.jpg?v=1787699412"},{"product_id":"chalcopyrite-galena-with-calcite-and-sphalerite-osikovo-orebody-madan-bulgaria","title":"Chalcopyrite \u0026 Galena with Calcite and Sphalerite – Osikovo Orebody, Madan, Bulgaria","description":"\u003cp\u003eAn attractive multi-mineral specimen from the \u003cstrong\u003eOsikovo Orebody, Deveti Septemvri Complex, Madan Orefield, Bulgaria\u003c\/strong\u003e, featuring prominent brassy-gold \u003cstrong\u003echalcopyrite\u003c\/strong\u003e associated with silvery \u003cstrong\u003egalena\u003c\/strong\u003e, dark \u003cstrong\u003esphalerite\u003c\/strong\u003e, and contrasting white \u003cstrong\u003ecalcite\u003c\/strong\u003e crystals.\u003c\/p\u003e\n\u003cp\u003eThe specimen displays a particularly appealing combination of metallic sulphide minerals against the lighter calcite, with well-defined crystal surfaces and strong metallic luster. The association is characteristic of the famous lead-zinc deposits of the Madan mining district, easily one of my favourite localities (I love metallic minerals).\u003c\/p\u003e\n\u003cp\u003eThe original North Star Minerals label records the specimen as mined in 1997. It was acquired by the late Bill Rouslin and resided in his collection until now, so there is useful collection provenance here.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMineral:\u003c\/strong\u003e Chalcopyrite, Galena, Calcite \u0026amp; Sphalerite\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Osikovo Orebody, Deveti Septemvri Complex, Madan Orefield, Bulgaria\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Tetragonal (Chalcopyrite); Cubic (Galena); Trigonal (Calcite); Cubic (Sphalerite)\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Sulfides with Carbonate\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Bill Rouslin #418; North Star Minerals; Mined 1997\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 8 × 5.5 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52749425049882,"sku":null,"price":140.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Chalcopyrite-Galena-Calcite-Sphalerite-Osikovo-Madan-Bulgaria02.jpg?v=1787863159"},{"product_id":"sphalerite-with-fluorite-quartz-rodderup-mine-cumberland-england","title":"Sphalerite with Fluorite \u0026 Quartz – Rodderup Mine, Cumberland, England","description":"\u003cp\u003eA classic British mineral specimen featuring lustrous, dark \u003cstrong\u003esphalerite\u003c\/strong\u003e crystals associated with \u003cstrong\u003efluorite and quartz\u003c\/strong\u003e from the historic \u003cstrong\u003eRodderup Mine, Cumberland, England\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe specimen is dominated by dark brown to nearly black sphalerite with strongly reflective crystal faces and a bright resinous to submetallic luster. Pale fluorite and quartz provide contrast across the matrix, creating an attractive example of the characteristic sulfide and gangue mineral associations found in the historic Cumberland mining district.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinerals:\u003c\/strong\u003e Sphalerite, Fluorite, Quartz\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Rodderup Mine, Cumberland, England, United Kingdom\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Cubic (Sphalerite); Cubic (Fluorite); Trigonal (Quartz)\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Sulfide, Halide, Silicate\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Rob Belcher (The Aesthetics Underground)\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 9.5 × 6.5 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52749464994074,"sku":null,"price":125.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Sphalerite-Fluorite-Quartz-Rodderup-Mine-Cumberland-England04.jpg?v=1787864008"},{"product_id":"plancheite-with-libethenite-quartz-kakanda-dr-congo","title":"Plancheite with Libethenite, Quartz \u0026 Calcite – Kakanda, Democratic Republic of the Congo","description":"\u003cp\u003eA striking copper-mineral specimen featuring rich green to blue-green \u003cstrong\u003eplancheite\u003c\/strong\u003e associated with dark green \u003cstrong\u003elibethenite\u003c\/strong\u003e with\u003cstrong\u003e quartz \u003c\/strong\u003eand\u003cstrong\u003e calcite\u003c\/strong\u003e from \u003cstrong\u003eKakanda, Democratic Republic of the Congo\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe specimen is dominated by light shades of blue-green plancheite forming an intricate textured coating across the matrix. Plancheite is a hydrated copper silicate known for its distinctive coloration and typically occurs in the oxidized zones of copper deposits. Crevices within the planceite reveal sparkling, dark green libethenite crystals best appreciated under magnification. Crystalline white to colourless quartz and pink calcite provide nice contrast.\u003c\/p\u003e\n\u003cp\u003eThe late Mike Clark obtained the specimen from The Aesthetics Underground, Banff, Alberta and labeled it specimen #987. I obtained the piece from a colleague of Mike's.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinerals:\u003c\/strong\u003e Plancheite, Libethenite, Quartz\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Kakanda, Lualaba Province, Democratic Republic of the Congo\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Orthorhombic (Plancheite); Orthorhombic (Libethenite); Trigonal (Quartz)\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Silicates, Phosphates, Carbonates\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Mike Clark #987; The Aesthetics Underground\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 6.5 × 4 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52749493764378,"sku":null,"price":75.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Plancheite-Libethenite-Quartz-Kakanda-DR-Congo02.jpg?v=1787864574"},{"product_id":"topaz-minas-gerais-brazil","title":"Topaz – Minas Gerais, Brazil","description":"\u003cp\u003eA substantial natural \u003cstrong\u003etopaz crystal\u003c\/strong\u003e from \u003cstrong\u003eMinas Gerais, Brazil\u003c\/strong\u003e, displaying a transparent to translucent, near-colorless body with subtle internal inclusions and warm iron-stained areas that add character to the specimen.\u003c\/p\u003e\n\u003cp\u003eThe complex crystal shows the elongated prismatic form characteristic of topaz, with prominent longitudinal striations. Actually two crystals, the specimen has a smaller crystal emanating from the end of larger one and both are fully terminated with sharp faces. Its clarity allows internal fractures, inclusions, and growth features to remain visible, giving the specimen considerable visual interest.\u003c\/p\u003e\n\u003cp\u003eMinas Gerais is one of the world's classic sources for topaz and has produced exceptional crystals in a wide range of colors and sizes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinerals:\u003c\/strong\u003e Topaz\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Minas Gerais, Brazil\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Orthorhombic\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Silicate\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Rob Belcher (The Aesthetics Underground)\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 6.5 × 3.3 × 3.25 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52749514440986,"sku":null,"price":190.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Topaz-Minas-Gerais-Brazil01.jpg?v=1787865218"},{"product_id":"scheelite-mt-xuebaoding-pingwu-sichuan-china","title":"Scheelite – Mt. Xuebaoding, Pingwu, Sichuan, China","description":"\u003cp\u003eAn impressive \u003cstrong\u003escheelite crystal\u003c\/strong\u003e from the famous \u003cstrong\u003eMt. Xuebaoding mining area near Pingwu, Sichuan, China\u003c\/strong\u003e. The specimen features a large honey-golden scheelite crystal with strongly reflective crystal faces and distinctive surface growth patterns.\u003c\/p\u003e\n\u003cp\u003eScheelite from the Xuebaoding locality is highly regarded by mineral collectors for its well-developed crystals, attractive coloration, and exceptional luster. This example displays the characteristic tetragonal crystal habit of scheelite, with broad lustrous faces and excellent visual presence.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinerals:\u003c\/strong\u003e Scheelite\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Mt. Xuebaoding, Mianyang, Pingwu County, Sichuan, China\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Tetragonal\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Tungstate\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Rob Belcher (The Aesthetics Underground)\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 5 × 4.5 × 3 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52749547077914,"sku":null,"price":125.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Scheelite-Mt-Xuebaoding-Pingwu-Sichuan-China01.jpg?v=1787865997"},{"product_id":"chalcopyrite-with-siderite-kaiwu-mine-hezhang-guizhou-china","title":"Chalcopyrite with Siderite – Kaiwu Mine, Hezhang, Guizhou, China","description":"\u003cp\u003eThis is one of my favourite metallic mineral specimens in inventory. An attractive \u003cstrong\u003echalcopyrite and siderite\u003c\/strong\u003e specimen from the \u003cstrong\u003eKaiwu Mine, Hezhang County, Guizhou, China\u003c\/strong\u003e, featuring abundant brassy-gold metallic chalcopyrite crystals in a dense, highly lustrous cluster.\u003c\/p\u003e\n\u003cp\u003eThe specimen shows numerous well-developed chalcopyrite crystals with sharp angular forms and strongly reflective metallic surfaces. Siderite is associated throughout the specimen, creating a classic sulfide-carbonate mineral association. The rich golden coloration, complex crystal growth and strong metallic luster make this a visually striking display specimen.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinerals:\u003c\/strong\u003e Chalcopyrite, Siderite\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Kaiwu Mine, Hezhang County, Guizhou, China\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Tetragonal (Chalcopyrite); Trigonal (Siderite)\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Sulfide, Carbonate\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Mike Christofolakos; The Aesthetics Underground\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 7.5 × 4 × 4 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52749559628058,"sku":null,"price":125.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Chalcopyrite-Siderite-Kaiwu-Mine-Hezhang-Guizhou-China01.jpg?v=1787866408"},{"product_id":"celestite-meckley-s-quarry-mandata-pennsylvania-usa","title":"Celestite – Meckley’s Quarry, Mandata, Pennsylvania, USA","description":"\u003cp\u003eAn attractive \u003cstrong\u003ecelestite crystal specimen\u003c\/strong\u003e from \u003cstrong\u003eMeckley’s Quarry, Mandata, Pennsylvania, USA\u003c\/strong\u003e, featuring a prominent pale blue tabular crystal set against a contrasting white crystalline matrix. \u003c\/p\u003e\n\u003cp\u003eThe main celestite crystal displays the delicate blue coloration characteristic of the species, with a broad, well-defined crystal form and vitreous luster. Smaller crystals are also present on the matrix, adding additional interest to the specimen. The combination of the large blue crystal and bright white matrix makes this a particularly appealing display piece from a classic Pennsylvania locality.\u003c\/p\u003e\n\u003cp\u003eThe late Bill Rouslin obtained this specimen decades ago probably when he resided in Ohio or Rhode Island. This piece is a real cutie!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinerals:\u003c\/strong\u003e Celestite\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Meckley’s Quarry, Mandata, Pennsylvania, USA\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Orthorhombic\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Sulfate\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Bill Rouslin\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 5 × 4.5 × 4 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52749583745306,"sku":null,"price":95.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Celestite-Meckleys-Quarry-Mandata-Pennsylvania-USA01.jpg?v=1787866798"},{"product_id":"scalenohedral-calcite-with-pyrite-anhui-province-china","title":"Scalenohedral Calcite with Pyrite – Anhui Province, China","description":"\u003cp\u003eA striking \u003cstrong\u003escalenohedral calcite\u003c\/strong\u003e specimen with associated \u003cstrong\u003epyrite\u003c\/strong\u003e from \u003cstrong\u003eAnhui Province, China\u003c\/strong\u003e, featuring two large, sharply formed calcite crystals with attractive pale golden to honey coloration.\u003c\/p\u003e\n\u003cp\u003eThe specimen is dominated by elongated scalenohedral calcite crystals exhibiting the dramatic pointed habit often referred to by collectors as \u003cstrong\u003e“dogtooth calcite.”\u003c\/strong\u003e The crystals show translucent areas, prominent crystal faces and a vitreous luster, while small pyrite inclusions or associations provide additional visual interest and metallic contrast.\u003c\/p\u003e\n\u003cp\u003eThe combination of impressive crystal size (with no tip damage), distinctive scalenohedral form and warm coloration makes this an attractive display specimen.\u003c\/p\u003e\n\u003cp\u003eAnother terrific calcite from Steve Potvin.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinerals:\u003c\/strong\u003e Calcite, Pyrite\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Anhui Province, China\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Trigonal (Calcite); Cubic (Pyrite)\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Carbonate, Sulfide\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Steve Potvin \u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 10 × 6 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52749701284122,"sku":null,"price":100.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Scalenohedral-Calcite-Pyrite-Anhui-Province-China02.jpg?v=1787869577"},{"product_id":"topaz-with-aquamarine-adun-cholon-range-nerchinsk-zabaykalsky-krai-russia","title":"Topaz with Aquamarine – Adun-Cholon Range, Nerchinsk, Zabaykalsky Krai, Russia","description":"\u003cp\u003eAn impressive and historically interesting \u003cstrong\u003etopaz with aquamarine\u003c\/strong\u003e specimen from the \u003cstrong\u003eAdun-Cholon Range near Nerchinsk, Zabaykalsky Krai, Russia\u003c\/strong\u003e. The Adun-Cholon Mountains of Transbaikalia are a classic historic Russian mineral locality particularly noted for pegmatite minerals, including topaz and beryl. \u003c\/p\u003e\n\u003cp\u003eThe specimen features numerous well-developed, translucent pale golden to champagne-colored, prismatic \u003cstrong\u003etopaz crystals\u003c\/strong\u003e distributed across pegmatitic matrix. The dark, striated crystals actually have \u003cstrong\u003eaquamarine\u003c\/strong\u003e cores! At first I missed this until the specimen was under strong illumination. I am not entirely sure what the black to dark green coating is though. The entire specimen has a natural iron-staining which certainly does not help the aesthetics. However I find any mineral specimen from a historic Russian locality has significant charm and intrigue.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCollector provenance \u003c\/strong\u003eon this piece has an interesting recent history. The specimen comes from with a label from William L. Roberts collection which was later obtained and marketed by the Dakota Matrix dealership. It was purchased by an unknown Calgary, Alberta collection which somehow ended up in Value Village in Calgary (a thrift store). This \"Value Village collection\" was purchased by the sharp eye of an enterprising young man in Calgary who later sold it to me at Rocky Mountain Minerals \u0026amp; Fossils. It is a shame we do not know who this mysterious Calgary collector was in the missing link or who owned it prior to William Roberts. This is likely a very old specimen; if it could only talk about its previous owners!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinerals:\u003c\/strong\u003e Topaz, Aquamarine\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Adun-Cholon Range, Nerchinsk, Zabaykalsky Krai, Russia\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Orthorhombic (Topaz); Hexagonal (Aquamarine\/Beryl)\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Silicate\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Willard L. Roberts Collection #53530; Dakota Matrix; Unknown Calgary collector; Ex Daniel Nieviadomy \u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 10 × 7  cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52749715210522,"sku":null,"price":250.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Topaz-Aquamarine-Adun-Cholon-Nerchinsk-Zabaykalsky-Russia01.jpg?v=1787870144"},{"product_id":"stilbite-pandulane-india","title":"Stilbite – Pandulane, India","description":"\u003cp\u003eA substantial and attractive \u003cstrong\u003estilbite\u003c\/strong\u003e specimen from \u003cstrong\u003ePandulane, India\u003c\/strong\u003e, featuring a dramatic cluster of large cream-white to pale peach \"bow-tie\" crystals. \u003c\/p\u003e\n\u003cp\u003eThe specimen displays broad, bladed stilbite crystals arranged in an intergrown cluster, with prominent longitudinal striations and a soft pearly to vitreous luster. Several of the crystals are particularly large and well developed, giving the specimen excellent dimensionality and display presence.\u003c\/p\u003e\n\u003cp\u003eStilbite is a member of the zeolite group and is especially well known from the basalt deposits of India, which have produced some of the world's finest and largest crystallized examples of the species.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinerals:\u003c\/strong\u003e Stilbite\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Pandulane, India\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Monoclinic\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Silicate (Zeolite)\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Tom Collins\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 8.5 × 6.5 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52749724582170,"sku":null,"price":150.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Stilbite-Pandulane-India01.jpg?v=1787871166"},{"product_id":"microlite-with-cassiterite-tourmaline-on-lepidolite-virgem-da-lapa-minas-gerais-brazil","title":"Microlite with Cassiterite \u0026 Tourmaline on Lepidolite – Virgem da Lapa, Minas Gerais, Brazil","description":"\u003cp\u003eAn interesting multi-mineral pegmatite specimen featuring \u003cstrong\u003emicrolite, cassiterite and tourmaline on purple lepidolite\u003c\/strong\u003e from \u003cstrong\u003eVirgem da Lapa, Minas Gerais, Brazil\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe specimen is dominated by a sparkling lavender to \u003cstrong\u003epurple lepidolite\u003c\/strong\u003e matrix hosting small \u003cstrong\u003ebrown octahedral microlite crystals\u003c\/strong\u003e, contrasting \u003cstrong\u003eblack cassiterite\u003c\/strong\u003e, and \u003cstrong\u003egemmy green tourmalines (elbaite)\u003c\/strong\u003e. The combination of several collectible pegmatite minerals on the colorful lepidolite matrix makes this an appealing and mineralogically diverse specimen.\u003c\/p\u003e\n\u003cp\u003eMicrolite is a tantalum-rich oxide mineral typically found in granitic pegmatites and is considerably less familiar than many of the minerals with which it occurs. One of the accompanying historic labels specifically describes this specimen as \u003cstrong\u003e“small brown octahedral [crystals] with black cassiterite (tin oxide) on purple lepidolite.”\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe specimen comes from with a label from the Mark \u0026amp; Jeanette Rogers Fine Minerals (USA) dealership. At some point, it was acquired by an unknown Calgary, Alberta collection and later ended up in Value Village in Calgary (a thrift store). This \"Value Village collection\" was purchased by the sharp eye of an enterprising young man in Calgary who later sold it to me at Rocky Mountain Minerals \u0026amp; Fossils. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinerals:\u003c\/strong\u003e Microlite, Cassiterite, Tourmaline, Lepidolite\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Virgem da Lapa, Minas Gerais, Brazil\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Cubic (Microlite); Tetragonal (Cassiterite); Trigonal (Tourmaline); Monoclinic (Lepidolite)\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Oxides, Silicates\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Daniel Nieviadomy; Unknown Calgary collector; Mark \u0026amp; Jeanette Rogers Fine Minerals\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 7.5 × 6  cm (longest tourmaline = 1.5 cm)\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52749729890586,"sku":null,"price":75.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Microlite-Cassiterite-Tourmaline-Lepidolite-Virgem-da-Lapa-Brazil01.jpg?v=1787871512"},{"product_id":"malachite-mindigi-mine-kambove-katanga-dr-congo","title":"Malachite stalactite – Mindigi Mine, Kambove, Katanga, Democratic Republic of Congo","description":"\u003cp\u003eAn attractive \u003cstrong\u003emalachite\u003c\/strong\u003e stalactite from the \u003cstrong\u003eMindigi Mine, Kambove, Katanga, Democratic Republic of Congo\u003c\/strong\u003e, displaying rich green coloration and distinctive rounded botryoidal growth.\u003c\/p\u003e\n\u003cp\u003eThe specimen is composed of numerous interconnected stalactites with smooth to finely textured surfaces. Variations from medium to deeper green emphasize the individual rounded forms and natural growth patterns. This botryoidal habit is characteristic of malachite formed in the oxidized zones of copper deposits.\u003c\/p\u003e\n\u003cp\u003eThe Katanga Copperbelt of the Democratic Republic of the Congo is one of the world's most important copper-producing regions and is renowned among collectors for its exceptional suite of secondary copper minerals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinerals:\u003c\/strong\u003e Malachite\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Mindigi Mine, Kambove, Katanga, Democratic Republic of Congo\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Monoclinic\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Carbonate\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Rob Belcher (The Aesthetics Underground)\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 8 cm x 6 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52795318731034,"sku":null,"price":95.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Malachite-Mindigi-Mine-Kambove-Katanga-DR-Congo04..jpg?v=1789079993"},{"product_id":"brazilianite-with-albite-linopolis-minas-gerais-brazil","title":"Brazilianite with Albite – Linópolis, Minas Gerais, Brazil","description":"\u003cp\u003eThis specimen pairs vivid yellow-green \u003cstrong\u003eBrazilianite\u003c\/strong\u003e crystals with contrasting white \u003cstrong\u003ealbite\u003c\/strong\u003e from \u003cstrong\u003eLinópolis, Minas Gerais, Brazil\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe Brazilianite occurs as elongated prismatic crystals with vitreous luster and the characteristic chartreuse to greenish-yellow coloration of the species. The surrounding pale albite matrix provides an attractive contrast that makes the color and crystal form particularly noticeable.\u003c\/p\u003e\n\u003cp\u003eBrazilianite is a relatively uncommon phosphate mineral best known from the granitic pegmatites of Minas Gerais. Fine Brazilian material is especially sought after for its distinctive yellow to greenish-yellow coloration and well-developed crystals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinerals:\u003c\/strong\u003e Brazilianite, Albite\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Linópolis, Minas Gerais, Brazil\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Monoclinic (Brazilianite); Triclinic (Albite)\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Phosphate\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Rob Belcher (The Aesthetics Underground)\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 4 cm x 4 cm x 3 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52795341701402,"sku":null,"price":225.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Brazilianite-Albite-Linopolis-Minas-Gerais-Brazil02.jpg?v=1788545093"},{"product_id":"brewsterite-yellow-lake-olalla-british-columbia-canada","title":"Brewsterite – Yellow Lake, Olalla, British Columbia, Canada","description":"\u003cp\u003eAn attractive \u003cstrong\u003eBrewsterite\u003c\/strong\u003e specimen from the \u003cstrong\u003eYellow Lake locality near Olalla, British Columbia, Canada\u003c\/strong\u003e, featuring a dense coating of small, sparkling cream-white to pale peach crystals.\u003c\/p\u003e\n\u003cp\u003eThe specimen displays numerous closely intergrown Brewsterite crystals across the matrix, producing a bright, finely textured surface with vitreous to pearly luster. The subtle cream and peach coloration gives the specimen a particularly attractive appearance under direct lighting.\u003c\/p\u003e\n\u003cp\u003eBrewsterite is an \u003cstrong\u003euncommon zeolite-group mineral\u003c\/strong\u003e, making this specimen particularly interesting to collectors of zeolites and Canadian minerals. Yellow Lake is a recognized British Columbia locality for Brewsterite and other mineral species.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinerals:\u003c\/strong\u003e Brewsterite\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Yellow Lake, near Olalla, British Columbia, Canada\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Monoclinic\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Silicate (Zeolite)\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Rob Belcher (The Aesthetics Underground)\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 5 cm x 4 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52795420344602,"sku":null,"price":45.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Brewsterite-Yellow-Lake-Olalla-British-Columbia-Canada01.jpg?v=1789079533"},{"product_id":"mimetite-tsumeb-mine-namibia","title":"Mimetite – Tsumeb Mine, Namibia","description":"\u003cp\u003eAn attractive \u003cstrong\u003emimetite\u003c\/strong\u003e specimen from the world-famous \u003cstrong\u003eTsumeb Mine, Namibia\u003c\/strong\u003e, featuring numerous small cream to pale yellow crystals covering the matrix.\u003c\/p\u003e\n\u003cp\u003eThe mimetite forms sparkling, closely intergrown crystals with a vitreous to resinous luster and subtle yellow coloration. The dense crystal coverage gives the specimen an appealing textured surface and makes it a fine example of this lead arsenate mineral. This pretty little piece is mounted on an acrylic stand.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eTsumeb Mine\u003c\/strong\u003e is one of the world's most celebrated mineral localities, renowned for an extraordinary diversity of mineral species and exceptionally crystallized secondary lead, copper and zinc minerals. Mimetite is among the classic collectible species found at Tsumeb.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinerals:\u003c\/strong\u003e Mimetite\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Hexagonal\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Arsenate\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Rob Belcher (The Aesthetics Underground)\u003cbr\u003e\u003cstrong\u003eDimensions: \u003c\/strong\u003e2.5 cm x 4\u003cstrong\u003e \u003c\/strong\u003ecm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52795430109466,"sku":null,"price":90.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Mimetite-Tsumeb-Mine-Namibia01.jpg?v=1788546988"},{"product_id":"topaz-ematita-minas-gerais-brazil","title":"Topaz – Ematita, Minas Gerais, Brazil","description":"\u003cp\u003eAn eye-catching \u003cstrong\u003etopaz specimen\u003c\/strong\u003e from\u003cstrong\u003e Ematita, Minas Gerais, Brazil\u003c\/strong\u003e, featuring a cluster of highly transparent, colourless crystals with bright reflective surfaces and excellent sparkle. The intergrown crystals create a complex, sculptural appearance, with numerous crystal faces catching the light from different angles.\u003c\/p\u003e\n\u003cp\u003eMinas Gerais is internationally renowned for producing exceptional gem minerals, and Brazilian topaz has long been sought after by mineral and gemstone collectors. The combination of remarkable transparency, brilliant luster and a celebrated Brazilian locality makes this a particularly attractive display piece for a collector looking for a specimen with both visual impact and classic provenance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinerals:\u003c\/strong\u003e Topaz\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Ematita, Minas Gerais, Brazil\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Orthorhombic\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Silicate\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Rob Belcher (The Aesthetics Underground)\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 8.5 x 7.5 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52839630045466,"sku":null,"price":250.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Topaz-Ematita-Minas-Gerais-Brazil-01.jpg?v=1788983770"},{"product_id":"aquamarine-with-muscovite-orthoclase-mt-xuebaoding-sichuan-china","title":"Aquamarine with Muscovite \u0026 Orthoclase – Mt. Xuebaoding, Sichuan, China","description":"\u003cp\u003eAn attractive \u003cstrong\u003eaquamarine, muscovite and orthoclase\u003c\/strong\u003e from \u003cstrong\u003eMt. Xuebaoding, Pingwu, Mianyang, Sichuan, China\u003c\/strong\u003e. Pale blue aquamarine crystals rise prominently from a contrasting matrix of sparkling muscovite and creamy-white orthoclase, creating a well-balanced specimen with strong visual interest.\u003c\/p\u003e\n\u003cp\u003eThe soft blue colour and translucency of the aquamarine stand out beautifully against the lighter matrix, while the abundance of reflective muscovite adds sparkle and texture.\u003cstrong\u003e \u003c\/strong\u003eThe combination of three contrasting minerals and the highly regarded Xuebaoding locality makes this an especially appealing choice for collectors who value both aesthetic mineral associations and classic Chinese specimens.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinerals:\u003c\/strong\u003e Aquamarine (Beryl), Muscovite, Orthoclase\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Mt. Xuebaoding, Pingwu, Mianyang, Sichuan, China\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Hexagonal (Aquamarine); Monoclinic (Muscovite, Orthoclase)\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Silicate\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Rob Belcher (The Aesthetics Underground)\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 7 × 5.5 × 3 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52839669530906,"sku":null,"price":240.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Aquamarine-Muscovite-Orthoclase-Xuebaoding-Sichuan-China-01.jpg?v=1788985091"},{"product_id":"corundum-sapphire-crystal-cluster-mogok-myanmar","title":"Corundum (Sapphire) Crystal Cluster – Mogok, Myanmar","description":"\u003cp\u003eAn attractive \u003cstrong\u003ecorundum (variety sapphire)\u003c\/strong\u003e, from the renowned \u003cstrong\u003eMogok district of Myanmar\u003c\/strong\u003e. The specimen features numerous naturally formed sapphire crystals clustered together, displaying muted \u003cstrong\u003egreenish-grey to blue-grey tones\u003c\/strong\u003e with areas of translucency and a pleasing vitreous luster.\u003c\/p\u003e\n\u003cp\u003eRather than a single isolated crystal, this specimen offers an interesting three-dimensional arrangement of corundum crystals of varying sizes, giving it considerable texture and visual complexity from different viewing angles.\u003c\/p\u003e\n\u003cp\u003eMogok is one of the world’s legendary gemstone localities, and a natural sapphire crystal cluster such as this offers collectors the opportunity to own sapphire in its geological form rather than as a cut gemstone—combining an iconic gem species with an equally iconic locality.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinerals:\u003c\/strong\u003e Corundum (variety Sapphire)\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Mogok, Myanmar\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Trigonal\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Oxide\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Rob Belcher (The Aesthetics Underground)\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 6 x 4 x 3.5 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52839739687194,"sku":null,"price":120.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Corundum-Sapphire-Crystal-Cluster-Mogok-Myanmar-02.jpg?v=1788986719"},{"product_id":"yellow-fluorite-xinyang-prefecture-henan-province-china","title":"Yellow Fluorite – Xinyang Prefecture, Henan Province, China","description":"\u003cp\u003eA striking \u003cstrong\u003eyellow fluorite \u003c\/strong\u003efrom \u003cstrong\u003eXinyang Prefecture, Henan Province, China\u003c\/strong\u003e, featuring an unusual sculptural formation of rounded, intergrown fluorite masses. The specimen displays rich \u003cstrong\u003ehoney-yellow to golden-yellow coloration\u003c\/strong\u003e, with translucent areas that become especially vibrant under direct illumination.\u003c\/p\u003e\n\u003cp\u003eThe softly rounded crystal forms create an almost botryoidal appearance and give the specimen substantial depth and visual texture. Its combination of warm color, translucency, and unusual morphology makes it particularly attractive from multiple viewing angles.\u003c\/p\u003e\n\u003cp\u003eFor the collector, this is the kind of fluorite that stands apart from the familiar cubic examples—the warm golden color and distinctive rounded formation make it an eye-catching display piece as well as an interesting representation of fluorite’s remarkable variety of crystal habits.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinerals:\u003c\/strong\u003e Fluorite\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Xinyang Prefecture, Henan Province, China\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Cubic (Isometric)\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Halide\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Rob Belcher (The Aesthetics Underground)\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 12 x 8 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52839808991514,"sku":null,"price":160.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Yellow-Fluorite-Xinyang-Henan-China-01.jpg?v=1788987708"},{"product_id":"hubnerite-on-quartz-pasto-bueno-pallasca-province-ancash-peru","title":"Hübnerite on Quartz – Pasto Bueno, Pallasca Province, Ancash, Peru","description":"\u003cp\u003eA dramatic \u003cstrong\u003ehübnerite on quartz \u003c\/strong\u003especimen from the renowned \u003cstrong\u003ePasto Bueno locality, Pallasca Province, Ancash, Peru\u003c\/strong\u003e. Dark, elongated blades of hübnerite extend prominently through a cluster of contrasting clear-to-milky quartz crystals, creating an exceptionally strong visual composition.\u003c\/p\u003e\n\u003cp\u003eThe hübnerite shows a dark brown-black appearance with \u003cstrong\u003esubmetallic to adamantine luster\u003c\/strong\u003e and pronounced longitudinal striations. Surrounding quartz crystals range from smaller transparent points to substantial, well-developed crystals that give the specimen impressive height and dimensionality.\u003c\/p\u003e\n\u003cp\u003eThe contrast is what makes this piece particularly appealing: dark, sharply defined hübnerite blades framed by bright quartz create the kind of dramatic mineral association that immediately draws the eye in a display cabinet. Combined with its classic Peruvian locality, it makes an attractive example for collectors of tungsten minerals, quartz associations, or South American minerals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinerals:\u003c\/strong\u003e Hübnerite, Quartz\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Pasto Bueno, Pallasca Province, Ancash, Peru\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Monoclinic (Hübnerite); Trigonal (Quartz)\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Oxide (Hübnerite); Silicate (Quartz)\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Rob Belcher (The Aesthetics Underground)\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 6.5 x 5.5 x 7 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52839885046042,"sku":null,"price":95.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Hubnerite-on-Quartz-Pasto-Bueno-Peru-02.jpg?v=1788988889"},{"product_id":"ruby-in-marble-dattaw-mine-mogok-myanmar","title":"Ruby in Marble – Dattaw Mine, Mogok, Myanmar","description":"\u003cp\u003eA striking \u003cstrong\u003eruby in marble specimen\u003c\/strong\u003e from the \u003cstrong\u003eDattaw Mine \u003c\/strong\u003ein the\u003cstrong\u003e legendary Mogok district of Myanmar\u003c\/strong\u003e, featuring a prominent elongated ruby crystal dramatically exposed against a contrasting white marble matrix.\u003c\/p\u003e\n\u003cp\u003eThe ruby displays an attractive \u003cstrong\u003epinkish-red to purplish-red coloration\u003c\/strong\u003e with a vitreous to adamantine luster on portions of the crystal surface. This shade flirts with the boundary between ruby and sapphire but I am choosing ruby in this case. Its elongated form runs boldly across the pale matrix, making the ruby immediately visible and giving the specimen a particularly strong natural composition.\u003c\/p\u003e\n\u003cp\u003eMogok is one of the world's most celebrated sources of ruby, and specimens that preserve the ruby in its original marble host rock provide a fascinating mineralogical context for this famous gemstone. For a collector, this piece offers more than the appeal of ruby alone—it presents the gemstone as it occurs in nature, with dramatic color contrast and an instantly recognizable display presence.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinerals:\u003c\/strong\u003e Corundum (Ruby), Marble\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Dattaw Mine, Mogok, Myanmar\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Trigonal\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Oxide\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Rob Belcher (The Aesthetics Underground)\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 6.5 x 5 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52839893074202,"sku":null,"price":450.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Ruby-in-Marble-Dattaw-Mine-Mogok-Myanmar-01.jpg?v=1788989149"},{"product_id":"green-pyromorphite-zschopau-saxony-germany","title":"Green Pyromorphite – Zschopau, Saxony, Germany","description":"\u003cp\u003eA classic \u003cstrong\u003epyromorphite \u003c\/strong\u003especimen from \u003cstrong\u003eZschopau, Saxony, Germany\u003c\/strong\u003e, featuring a rich covering of green crystals across a contrasting brown matrix. Numerous small, well-formed crystals create a highly textured surface, with brighter crystal faces catching the light throughout the specimen.\u003c\/p\u003e\n\u003cp\u003eThe pyromorphite ranges from olive to fresh green, with a resinous to adamantine luster that gives the crystal-covered areas an attractive sparkle. The dense crystallization and natural variation in color make the specimen visually interesting from multiple angles.\u003c\/p\u003e\n\u003cp\u003eFor the collector, this piece combines the vivid green color for which pyromorphite is prized with the appeal of a classic German locality—an attractive old-world specimen that brings both strong color and mineralogical character to a display.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinerals:\u003c\/strong\u003e Pyromorphite\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Zschopau, Saxony, Germany\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Hexagonal\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Phosphate\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Rob Belcher (The Aesthetics Underground)\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 6.5 cm x 5.5 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52839903953178,"sku":null,"price":190.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Green-Pyromorphite-Zschopau-Saxony-Germany-01.jpg?v=1789078210"},{"product_id":"purple-fluorite-berbes-asturias-spain","title":"Purple Fluorite – Berbes, Asturias, Spain","description":"\u003cp\u003eA beautiful \u003cstrong\u003epurple fluorite \u003c\/strong\u003especimen from \u003cstrong\u003eBerbes, Asturias, Spain\u003c\/strong\u003e, a classic European locality renowned among collectors for its distinctive fluorite.\u003c\/p\u003e\n\u003cp\u003eThe specimen is richly covered with intergrown \u003cstrong\u003ecubic fluorite crystals\u003c\/strong\u003e displaying attractive pale lavender to deeper purple coloration. The numerous overlapping cubes create excellent depth and texture, while their transparent to translucent character and vitreous luster allow the crystal faces and internal features to catch the light beautifully.\u003c\/p\u003e\n\u003cp\u003eThe soft lavender-purple color combined with the unmistakable geometric cubic habit gives this specimen both strong visual appeal and classic mineralogical character.\u003c\/p\u003e\n\u003cp\u003eFor the collector, this specimen offers the combination that makes Berbes fluorite so desirable: beautiful purple coloration, abundant cubic crystallization, and a famous Spanish locality—an elegant display piece with instant recognition among fluorite enthusiasts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinerals:\u003c\/strong\u003e Fluorite\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Berbes, Asturias, Spain\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Cubic (Isometric)\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Halide\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Rob Belcher (The Aesthetics Underground)\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 12 x 9.5 x 5 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52839910736154,"sku":null,"price":250.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Purple-Fluorite-Berbes-Asturias-Spain-03._ecae6cf4-78fc-4eba-a752-4d59a8f11202.jpg?v=1788990050"}],"url":"https:\/\/keithrocks.ca\/collections\/new-acquisitions.oembed","provider":"Rocky Mountain Minerals and Fossils","version":"1.0","type":"link"}