{"product_id":"auction-win-e625bc7b-534b-4cf5-92b3-18d7d853313d","title":"Auction Win: Cobalt-bearing “Cobalto” Calcite","description":"\u003cp\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Katanga Copper Crescent, Haut-Katanga, DR Congo\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e Miniature - 3.5 × 1.7 × 3.2 cm\u003c\/p\u003e\n\u003cp\u003eThe small black botryoidal crystals across the pink surface are currently a mystery to us. Cobalt-bearing “Cobalto” Calcite is a calcite variety in which cobalt substitutes for calcium, with formula (Ca,Co)CO3. Its cobalt content commonly produces light to dark pink coloration. The name describes its composition rather than identifying a separate mineral species.\u003cbr\u003e\u003cbr\u003eThe Katanga Copper Crescent is a major mining area in Haut-Katanga, DR Congo, renowned for sediment-hosted copper-cobalt deposits and exceptionally rich secondary copper minerals, especially malachite. Its mines have produced notable dioptase, cobaltian calcite, plancheite, and superb baryte crystal clusters, with Shangulowé particularly celebrated for some of the finest baryte specimens from the Congo. Famous localities such as Tantara, Ruashi, Luiswishi, and Kambove add depth to the region’s mineralogical importance, making Katanga specimens enduringly sought after by collectors.\u003c\/p\u003e","brand":"Crystal Castle","offers":[{"title":"Default Title","offer_id":49783332438171,"sku":null,"price":5.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0336\/3012\/6217\/files\/986bc023-b8ca-40bb-90ae-57c3701c850a.jpg?v=1791753059","url":"https:\/\/www.overtonfamilyjewels.com\/products\/auction-win-e625bc7b-534b-4cf5-92b3-18d7d853313d","provider":"OFJ's Crystal Castle","version":"1.0","type":"link"}