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Ships within 48 hours · Estimated delivery Sep 8 - Sep 13
Reserve from the case
Ships within 48 hours · Estimated delivery Sep 8 - Sep 13
Approx Weight (per piece): 66
with dimensions of 65x44x19 mm
Size: 28x11mm
Treatment: None - Unheated
Pseudomorph Goethite After Marcasite | Prophecy Stone | 42gr | Farafra Oasis, Egypt NWA 2126 Approx Weight (per piece): 66Pseudomorphs 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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