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Ships within 48 hours · Estimated delivery Sep 22 - Sep 27
Size: 9x6mm
Its dimensions are 96x50x7mm
03-00026-J - 33x27 mm / 91
A few olivine grains contain planar fractures
Weight: 414 Grams / 14
Pseudomorph Goethite After Marcasite | Prophecy Stone | 30 gr | Farafra Oasis, Egypt | SO24 Rhodochrosite Size: 9x6mmPseudomorphs 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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