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Ships within 48 hours · Estimated delivery Sep 18 - Sep 23
Its dimensions are 99x63x7 mm
Dimensions: 105x52x38 mm / 4
Name: Aragonite Sphere
Its dimensions are 27x27x8mm
Pseudomorph Goethite After Marcasite | Prophecy Stone | 17 gr | Farafra Oasis, Egypt Sodalite Its dimensions are 99x63x7 mmPseudomorphs are mineral specimens that have the external shape of one mineral but are composed of another. The pseudomorph goethite after marcasite forms when marcasite is exposed to oxidizing conditions and starts to oxidize and break down. As the marcasite breaks down, goethite replaces it in the crystal structure, preserving the shape of the original marcasite crystal. The resulting specimen appears as a marcasite crystal, but is actually composed
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