Pseudomorph Goethite After Marcasite | Prophecy Stone | 45.2 gr | Farafra Oasis, Egypt Tatahouine The etched design only adds

The etched design only adds to its allure

Its dimensions are 130x83x57 mm

Weight: 131 Grams / 4

which makes recovery of small meteorite fragments hard

Pseudomorph Goethite After Marcasite | Prophecy Stone | 45.2 gr | Farafra Oasis, Egypt Tatahouine The etched design only addsPseudomorphs 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