22103 - Beautiful 1.61 Inch Pyrite Crystals from famous Navajun Mines (Spain) Crinoids • Eocene of India

• Eocene of India

Figure 4 shows olivine and pyroxene phenocrysts surrounded by plagioclase

• Cretaceous of Egypt (13 collections)

whereas kamacite occurs only as a thin mantling around olivine crystals

Age range: 402

22103 - Beautiful 1.61 Inch Pyrite Crystals from famous Navajun Mines (Spain) Crinoids • Eocene of IndiaThe mineral pyrite, or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical formula FeS2 (iron(II) disulfide). Pyrite is considered the most common of the sulfide minerals. Pyrite's metallic luster and pale brass yellow hue give it a superficial resemblance to gold, hence the well known nickname of fool's gold. The color has also led to the nicknames brass, brazzle, and Brazil, primarily used to refer to pyrite found in coal.