{"product_id":"lollingite-over-silver-castle-mine-gowganda-ontario-canada","title":"Löllingite over Silver – Castle Mine, Gowganda, Ontario, Canada","description":"\u003cp\u003eA distinctive\u003cstrong\u003e native silver specimen with löllingite\u003c\/strong\u003e from the historic \u003cstrong\u003eCastle Mine \u003c\/strong\u003ein the\u003cstrong\u003e Gowganda District, Ontario, Canada\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eClassic elongated, dendritic silver crystals, in branching patterns, partially-coated with löllingite. The silver crystals show \"spinel-twinning\" and are fascinating to review under magnification. These two minerals contrast nicely with the underlying white calcite on matrix. Measuring 11cm long, this is a healthy, cabinet-sized specimen and is quite attractive (for gray minerals!).\u003c\/p\u003e\n\u003cp\u003eThis Ontario district is known for its world-class silver specimens along with less common cobalt and arsenic-bearing minerals (löllingite is an iron arsenide). From the collection of friend and mentor, Rob Belcher.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinerals:\u003c\/strong\u003e Löllingite, Native Silver\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Castle Mine, Gowganda District, Ontario, Canada\u003cbr\u003e\u003cstrong\u003eCrystal System:\u003c\/strong\u003e Orthorhombic (Löllingite); Cubic (Silver)\u003cbr\u003e\u003cstrong\u003eMineral Class:\u003c\/strong\u003e Arsenide (Löllingite); Native Element (Silver)\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex Rob Belcher (The Aesthetics Underground)\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 11 cm x 7 cm x 5.5 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":52839611990298,"sku":null,"price":250.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/Lollingite-Silver-Castle-Mine-Gowganda-Ontario-Canada-01.jpg?v=1791753871","url":"https:\/\/keithrocks.ca\/products\/lollingite-over-silver-castle-mine-gowganda-ontario-canada","provider":"Rocky Mountain Minerals and Fossils","version":"1.0","type":"link"}