Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The atoms are linked in a continuous framework of SiO4 silicon–oxygen tetrahedra
Look up quartz in Wiktionary, the free dictionary. Quartz is a common mineral. Quartz may also refer to: Quartz, California, former settlement in Butte
The quartz crisis (Swiss) or quartz revolution (America, Japan and other countries) was the advancement in the watchmaking industry caused by the advent
Quartz reef mining is a type of gold mining in "reefs" (veins) of quartz. Quartz is one of the most common minerals in the Earth's crust, and most quartz