22101 - Beautiful 2.47 Inch Pyrite Crystals from famous Navajun Mines (Spain) NWA Chondrite Polished Sections Circulocrania

Circulocrania

The morphology of 5 phalanx bones can be recognized

The color is really nice

These ammonites present an impressive mineralization

Dortangs et al

22101 - Beautiful 2.47 Inch Pyrite Crystals from famous Navajun Mines (Spain) NWA Chondrite Polished Sections CirculocraniaThe 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.