Marcasite is an iron disulfide (FeS
This is a wonderful specimen of light green fluorite from the Vtoroy Sovetskiy Mine in Russia
This slab is polished on both sides
Acrylic base and putty sold separately
The mineral has a hardness ranging from 3
Iridescent Goethite from Spain TF2999 moon Marcasite is an iron disulfideIridescent Goethite from Spain Approx. Dimensions: 2x3. 25x1. 75 inches Approx. Weight: 242 grams Locality: Filon Sur Mine, Tharsis, Huelva, Spain This specimen is glued to the acrylic base. Weight shown includes the base, but the dimensions are of the actual specimen not including the base. Iridescent goethite specimens from the Filn Sur Mine (Filn Sur open pit, Tharsis Mines, Alosno, Huelva, Andalusia, Spain) are striking collectors minerals