{"product_id":"marcasite-1","title":"Marcasite","description":"\u003cp\u003eBlackstone Mine, \u003c\/p\u003e\n\u003cp\u003eUpper Mississippi Valley Dist.,\u003c\/p\u003e\n\u003cp\u003eLafayette Co., Wisconsin,\u003c\/p\u003e\n\u003cp\u003eUSA\u003c\/p\u003e\n\u003cp\u003e8x8x10cm\u003c\/p\u003eMarcasite is an iron sulfide mineral prized by collectors for its metallic luster and distinctive pale brass-yellow color. This specimen originates from the renowned Blackstone Mine in Wisconsin's Upper Mississippi Valley District, a classic locality celebrated for high-quality marcasite crystals. The cubic and pyritohedral forms typical of this deposit display sharp definition and bright surfaces. At 8×8×10 cm, this is a substantial display piece suitable for serious mineral collections. Marcasite is notably more reactive than its polymorph pyrite, making proper storage and handling important for long-term preservation. A fine example of American mineral heritage from one of the region's most productive historical sources.","brand":"Sterling Mineral Imports","offers":[{"title":"Default Title","offer_id":48105140584669,"sku":"72","price":150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0548\/9954\/0189\/files\/IMG-5741.heic?v=1782738942","url":"https:\/\/sterlingmineralimports.com\/products\/marcasite-1","provider":"Sterling Mineral Imports","version":"1.0","type":"link"}