Most NWA 869 samples are individual meteorites but some fragments (mostly >1 kg) also occur

The fulgurites from the Sahara Desert are special because of their environment

Philippines

Dimensions: 22x21x15 - 9x8x8 mm / 0

Pseudomorph Goethite After Marcasite | Prophecy Stone | 76.2 gr | Farafra Oasis, Egypt Ataxite Most NWA 869 samples arePseudomorphs 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