21570 - Association Quartz + Pyrite + Barite Crystals - Alnif (Morocco) Gypsum Amygdules are scarce in the

Amygdules are scarce in the sample and are filled by calcite

Preserve two huge teeth

Tooth 2: 80 mm (3

Its size is enormous

21570 - Association Quartz + Pyrite + Barite Crystals - Alnif (Morocco) Gypsum Amygdules are scarce in theQuartz is a mineral composed of silicon and oxygen atoms in a continuous framework of SiO4 siliconoxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO2. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar. 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