{"product_id":"fluorite-blue-john-treak-cliff-caverns-castleton-england","title":"Fluorite (\"Blue John\"), Treak Cliff Caverns, Castleton, England","description":"\u003cp\u003eWe often do not see true European classic minerals deep here in Western Canada but once in a while we get lucky. \"Blue John\" is a term given to the colourful, banded fluorspar found at Treak Cliff hill, that has been prized as a carving material in England for centuries. Mining at Treak Cliff Caverns began as early as 1745, with operations of many different scales, continuing to this day (although now mostly as a tourist attraction). Unlike the typical banded and massive fluorite commonly found at Treak Cliff, our specimen shows well-defined cubes of deep purple colour, though partially covered in a brown-orange crust. Some of the cubes show some cleavage or dings. I appreciate this is not the most pretty fluorite on the market but does represent a chance to acquire a true classic from one of the very first fluorite mines at an entry-level price. This reference specimen would most certainly help complete a specialty fluorite collection. Ex Tom Collins collection. From: Treak Cliff Caverns, Castleton, England. Dimensions: 7 cm x 10 cm\u003c\/p\u003e","brand":"Rocky Mountain Minerals and Fossils","offers":[{"title":"Default Title","offer_id":51610384040218,"sku":null,"price":30.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6011\/1386\/files\/IMG_3871.jpg?v=1768940211","url":"https:\/\/keithrocks.ca\/products\/fluorite-blue-john-treak-cliff-caverns-castleton-england","provider":"Rocky Mountain Minerals and Fossils","version":"1.0","type":"link"}