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• Permian of Canada (1: Prince Edward Island)
less commonly euhedral
This is a nice trilobite specimens natural association of 2 Crotocephalina
similar specimens are impossible to find anywhere in the market
Large crystals are dark blue
22212 - Beautiful 142.4 in Quartz Crystals in Natural Matrix - Imilchil (Morocco) Nenoticidaris mercieri • Permian of Canada (1:Quartz 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.
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