Pseudomorph Goethite After Marcasite | Prophecy Stone | 51.7 gr | Farafra Oasis, Egypt | SO24 H6 is from the Greek eidos

is from the Greek eidos “form”

Size: 10x5

This classified meteorite was found in 1861 in the driest desert of the world called the Atacama

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

Pseudomorph Goethite After Marcasite | Prophecy Stone | 51.7 gr | Farafra Oasis, Egypt | SO24 H6 is from the Greek eidosPseudomorphs 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