A thick vein of white quartz in a granite boulder.
A vein of white quartz in a granite boulder. Quartz is the most abundant mineral in the Earth's continental crust. It is made up of a lattice of silica tetrahedra. Quartz has a hardness of 7 on the Mohs scale. Gold is often found in or near quartz veins
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Photo credit: © B.A.E. Inc. / Alamy / Afripics
License: Licensed
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Keywords: boulder, crystal, crystals, geology, granite, mineral, minerals, quartz, rock, stone, stones, vein, white
