20334 - Beautiful 3.51 Inch Pyrite Crystals on Calcite from El Hammam Mine - Morocco Rainbow quartz Owen 1845 (mosasaur)

Owen 1845 (mosasaur)

which lived at the middle of the Cretaceous (between the Albian and Cenomanian stages

In this way

Picture: Geological contextualization of North Africa outcrops:  "First report on Cretaceous vertebrates from the Algerian Kem Kem beds

20334 - Beautiful 3.51 Inch Pyrite Crystals on Calcite from El Hammam Mine - Morocco Rainbow quartz Owen 1845 (mosasaur)The 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.