{"product_id":"prehnita","title":"Prehnite","description":"\u003cp\u003e Prehnite weighing 188 grams and measuring 110 x 70 x 40 mm, originating from South Africa. This incredible specimen delights us with its perfect crystallization in the form of tabular, ridge-like crystals.\u003c\/p\u003e\n\n\u003cp\u003e Prehnite is a mineral belonging to the silicate group, specifically the phyllosilicate subgroup. It is a calcium aluminum aluminosilicate, although up to 7% of the aluminum may be replaced by iron.\u003c\/p\u003e\n\u003cp\u003e It is a secondary mineral formed in the cracks of basic volcanic rocks, provided they are rich in calcium. It is also found in igneous rocks and, less frequently, as a product of low-grade metamorphism. In all these rock types, it can appear filling cavities as botryoidal or fan-shaped formations, or lining fractures. Well-defined crystals are rare and small.\u003c\/p\u003e\n\u003cp\u003e Origin: South Africa\u003c\/p\u003e\n\u003cp\u003e Dimensions: 110 x 70 x 40 mm\u003c\/p\u003e\n\u003cp\u003e Weight: 188 grams\u003c\/p\u003e","brand":"Rocas\u0026Cristales","offers":[{"title":"Default Title","offer_id":52536001954092,"sku":"PPREHN1107040","price":318645.0,"currency_code":"ARS","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/9009\/0028\/files\/prehnita-minerales-de-coleccion-2342452.jpg?v=1775147467","url":"https:\/\/rocasycristales.com\/en\/products\/prehnita","provider":"Rocas\u0026Cristales","version":"1.0","type":"link"}