Pseudomorph Goethite After Marcasite | Prophecy Stone | 45.2 gr | Farafra Oasis, Egypt Hematite This specimen is a great

This specimen is a great example of both

It is a lustrous black color and in very good condition

Name: Calcite with Hematite Crystal Cluster

Origin: Mined in Cañete Province

Rarely are Canadian meteorites other than Bruderheim or Abee offered to the public

Pseudomorph Goethite After Marcasite | Prophecy Stone | 45.2 gr | Farafra Oasis, Egypt Hematite This specimen is a greatPseudomorphs 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