22103 - Beautiful 1.61 Inch Pyrite Crystals from famous Navajun Mines (Spain) Crinoids inside his own jaw bone

inside his own jaw bone

Phacopinae

In the alteration zone (Figure 5B) the close relation between calcite and barite is observed

• Eocene of India

22103 - Beautiful 1.61 Inch Pyrite Crystals from famous Navajun Mines (Spain) Crinoids inside his own jaw boneThe 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.