{"product_id":"min3131microcline-var-adularia","title":"Microcline Var. Adularia","description":"Collected in the early 1970s from the third level of the Mass Mine, Shaft C, Ontonagon County, Michigan, this specimen of adularia (a variety of microcline) represents uncommon material from a locality unlikely to yield new specimens. The adularia crystals display a strong luster and a distinctive warm orange coloration, the result of disseminated copper present within the crystals themselves. A well-crystallized and mineralogically noteworthy thumbnail for collectors with an interest in feldspar varieties or the classic copper-bearing assemblages of Michigan's Upper Peninsula.","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":53381530222865,"sku":"min3131","price":48.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/min3131_1_of_4.jpg?v=1775535438","url":"https:\/\/adamantineminerals.com\/products\/min3131microcline-var-adularia","provider":"Adamantine Minerals","version":"1.0","type":"link"}