{"product_id":"natural-extremely-rare-poldervaartite-olmiite-with-bulfonteinite-specimen-x-1-from-kmf-nchwaning-mine-south-africa","title":"Natural Extremely Rare Poldervaartite 'Olmiite' with Bulfonteinite Specimen x 1 From KMF, N'Chwaning Mine, South Africa","description":"\u003cp\u003e\u003cstrong\u003ePRODUCT DESCRIPTION\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eVery large, \u003cstrong\u003eCabinet-sized Poldervaartite and Bultfonteinite Specimen.\u003c\/strong\u003e Blocky Beige Bipyramidical Nesosilicate Crystals growing on and inside of a Ferro Manganese matrix vug formation with short Acicular Bultfonteinite crystals (originally discovered in Bultfontein, Orange Free State, South Africa) \u003c\/p\u003e\n\u003cp\u003eThis is not super spectacular, but is a good specimen super rare Mineral, renamed\/recognised as Olmiite in the late 1990s from the N'Çhwaning Mine. This may not look spectacular but it is great specimen of its type and is long gone to try and find again now, as this was early 1990's. \u003c\/p\u003e\n\u003cp\u003e\u003cspan data-huuid=\"8722702920604549435\"\u003ePoldervaartite and Bultfonteinite are two minerals that were occasionally found together at the N'Çhwaning mine in Northern Cape, Kalahari Manganese Fields, South Africa. \u003c\/span\u003e\u003cspan data-huuid=\"8722702920604552728\"\u003ePoldervaartite is a calcium-manganese silicate mineral characterized by its milky white to peach colors and its chemical formula, while Bultfonteinite is an acicular calcium silicate hydrate mineral known for its complex crystal structure and white, opaque appearance - \u003cspan data-cid=\"aee3c745-e7fc-4898-8ef9-437c1fb3e2f2\" class=\"pjBG2e\"\u003e\u003cspan class=\"UV3uM\"\u003eknown only from one other location that it was named after; Bultfontein. \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRODUCT DATA \u003cbr\u003e\u003c\/strong\u003eLocality = KMF, N'Chwaning Mine, South Africa\u003cbr\u003eGrade = Very Good Grade\u003cbr\u003eSize = 183 - 122 - 142 mm \u003c\/p\u003e","brand":"PULDERVAARTITE","offers":[{"title":"Default Title","offer_id":44107255218230,"sku":"R0064-250912AE","price":1800.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/5235\/1030\/files\/IMG_7830.jpg?v=1763383979","url":"https:\/\/thecollection.toprocks.com\/products\/natural-extremely-rare-poldervaartite-olmiite-with-bulfonteinite-specimen-x-1-from-kmf-nchwaning-mine-south-africa","provider":"The Toprock Collection","version":"1.0","type":"link"}