Pseudomorph Goethite After Marcasite | Prophecy Stone | 37.6 gr | Farafra Oasis, Egypt Apatite typically ranges in color from

typically ranges in color from light blue to pale blue

Its dimensions are  35x21x16 mm

Color: Orange Red

8 gram Impact Vesicular Breccia also referred to as Suevite coming from the famous Rochechouart impact structure in Southwestern France

Weight:  161 Grams / 5

Pseudomorph Goethite After Marcasite | Prophecy Stone | 37.6 gr | Farafra Oasis, Egypt Apatite typically ranges in color fromPseudomorphs 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