{"product_id":"turgite-cocomorachic-chihuahua-mexico-855","title":"2.33 Inch Turgite Specimen - Cocomorachic, Chihuahua, Mexico (#855)","description":"\u003cp\u003eThis is a beautiful 2.33-inch-wide iridescent turgite specimen collected from the area of Cocomorachic, Chihuahua, Mexico. It measures 2.33 x 1.83 inches and is iridescent on one side only.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.27 ounces\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAbout Turgite\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTurgite is a mixture of the iron oxide minerals hematite (Fe₂O₃) and goethite (FeOOH). It is not recognized as a distinct mineral species because it lacks a unique chemical formula and crystal structure; instead, it represents a transitional or altered form of these two common iron minerals.\u003c\/p\u003e\n\u003cp\u003eWhat makes turgite stand out is its intense iridescence. Thin surface films created by oxidation cause light interference, producing vivid flashes of red, purple, blue, green, and gold that shift with viewing angle. Specimens often occur in botryoidal (grape-like) or stalactitic habits inherited from the parent goethite.\u003c\/p\u003e\n\u003cp\u003eTurgite forms through the chemical alteration of goethite under oxidizing conditions, typically as a secondary mineral in iron-rich deposits. The name comes from its original description at the Turjinskii Mine in Russia. Attractive examples are also known from localities in the United States (notably Georgia and Virginia), Mexico, and elsewhere.\u003c\/p\u003e\n\u003cp\u003eCollectors value turgite for its natural metallic rainbow colors and the insight it offers into iron mineral weathering processes.\u003c\/p\u003e","brand":"Fossils for Sale at BuriedHistoryStore.com","offers":[{"title":"Default Title","offer_id":54390172647708,"sku":"Item#855","price":42.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0930\/0960\/8988\/files\/item-855-turgite_f79d977a-9ca2-4175-bed4-2f75d1a4f739.png?v=1785713763","url":"https:\/\/buriedhistorystore.com\/products\/turgite-cocomorachic-chihuahua-mexico-855","provider":"Fossils for Sale at BuriedHistoryStore.com","version":"1.0","type":"link"}