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This Specimen has been sold.
HERE ARE SOME OTHER SIMILAR FOSSILS FOR SALE
2.6" Goethite/Limonite Pseudomorph after Cubic Pyrite - Morocco
This interesting, 2.6" wide goethite/limonite pseudomorph after pyrite was collected from Morocco. These twinned cubic pyrite aggregations underwent surface alteration to goethite/limonite, giving the exterior of the crystals their dark color.
Known since ancient times, goethite is a beautiful dark gray to black iron-based mineral that can take many forms. It was used in antiquity as a pigment for painting and has even been found in the famous caves at Lascaux, France.
