quartz (silica SiO2)
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we sell Quarts/ silica SiO2. the combination os the stone is SiO2 = 65%, combined oxide
R2O3 = 24.4%, sodium NaO2 = 7% , potassium K2O = 2%,
Silica refers to naturally occurring minerals composed principally of silicon dioxide (SiO2) . Silicon dioxide exists in both crystalline and amorphous forms. Quartz, cristobalite and tridymite are the three most common crystalline forms. These forms are interrelated and can change their form under different conditions of temperature and pressure. There are two different forms of quartz that are designated by the prefixes alpha and beta. The most common form is alpha-quartz which is a major component of igneous rocks, such as granite and pegmatite, but is also found in sandstone and sedimentary rock such as slate and shale. Beta-quartz is less common. Many synthetic forms of quartz also exist.