{"product_id":"calcite-with-copper-minerals-d-natural-mexico","title":"Calcite with copper minerals (D) — natural, Mexico","description":"\u003cp dir=\"ltr\"\u003eFrom the Río Tinto Mine, which is not the Rio Tinto you are thinking of.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThere is a Rio Tinto in Spain, in Huelva, mined since the Bronze Age and famous for a river that runs deep red with dissolved iron. There is also Rio Tinto the mining corporation, one of the largest in the world, which took its name from that Spanish site in 1873. Neither has anything to do with this piece.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThis came out of a small copper mine north of Chihuahua City in Mexico, also called Río Tinto, also known as the Terrazas mine. The Chihuahua-based company that holds the property today is called Minera Rio Tinto, and it is named after the mine rather than the other way around. Three unrelated things, one name, and a locality that gets miscatalogued constantly because of it.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eVery soft, and copper minerals are toxic if swallowed. Dust with a dry brush rather than washing, keep it away from children and pets, and wash your hands after handling.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMineral:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003eCalcite (calcium carbonate, CaCO₃) with blue copper minerals\u003cbr\u003e\u003cstrong\u003eCrystal system:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003eTrigonal (calcite)\u003cbr\u003e\u003cstrong\u003eOrigin: \u003c\/strong\u003eRío Tinto Mine, Labor de Terrazas, Chihuahua Municipality, Chihuahua, Mexico\u003cbr\u003e\u003cstrong\u003eHardness: \u003c\/strong\u003eCalcite is 3 on the Mohs scale and the blue coating is softer\u003cbr\u003e\u003cstrong\u003eTreatment: \u003c\/strong\u003eNone\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 9 x 6.5 x 10 cm\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 280 g                                                                                                                                          \u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eYou will receive the exact piece photographed.\u003c\/p\u003e","brand":"The Crystal Showroom","offers":[{"title":"Default Title","offer_id":58513525670232,"sku":null,"price":105.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0778\/4880\/5720\/files\/ccm-d-1.jpg?v=1789821095","url":"https:\/\/thecrystalshowroom.com\/products\/calcite-with-copper-minerals-d-natural-mexico","provider":"The Crystal Showroom","version":"1.0","type":"link"}