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including dark green
This never classified North West Africa stone was found in the Sahara Desert around 2000
Origin: Mined in Bombay
Dimensions: 75x59x56 mm / 2
Dimensions: Specimen 15x8 mm / 0
Pseudomorph Goethite After Marcasite | Prophecy Stone | 76.2 gr | Farafra Oasis, Egypt Abee including dark greenPseudomorphs 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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