Pseudomorph Goethite After Marcasite | Prophecy Stone | 37.6 gr | Farafra Oasis, Egypt Apatite Staurolite and Quartz mined in

Staurolite and Quartz mined in Barra do Salinas district

Color: Orange Red

Weight:  161 Grams / 5

typically ranges in color from light blue to pale blue

This impact breccia was found near the villages of Belchite and Fuendetodos near the center area of this large multiple impact structure

Pseudomorph Goethite After Marcasite | Prophecy Stone | 37.6 gr | Farafra Oasis, Egypt Apatite Staurolite and Quartz mined inPseudomorphs 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