- silica (SiO2)
- most common mineral component of rock.
Geography Dictionary & Glossary for Students \\ ITS Tutorial School (ITS) - Hong Kong.
silica (SiO2)
Look at other dictionaries:
silica mineral — Any of the forms of silicon dioxide (SiO2), including quartz, tridymite, cristobalite, coesite, stishovite, melanophlogite, lechatelierite, and chalcedony. Various kinds of silica minerals have been produced synthetically. * * * Introduction… … Universalium
SiO2 — Silex Si lex, n. [L., a finit, a pebblestone.] (Min.) Silica, {SiO2} as found in nature, constituting quarz, and most sands and sandstones. See {Silica}, and {Silicic}. [1913 Webster] … The Collaborative International Dictionary of English
silica — [sil′i kə] n. [ModL < L silex, flint: see SILEX] a glassy, very hard mineral, silicon dioxide, SiO2, found in a variety of forms, as in quartz, opal, chalcedony, sand, or chert … English World dictionary
silica — /sil i keuh/, n. the dioxide form of silicon, SiO2, occurring esp. as quartz sand, flint, and agate: used usually in the form of its prepared white powder chiefly in the manufacture of glass, water glass, ceramics, and abrasives. Also called… … Universalium
Silica — The chief component of sand and a substance responsible for lung disease and cancer. Crystalline silica of respirable size is primarily quartz dust occurring in industrial and occupational settings in the form of fine, breathable particles.… … Medical dictionary
Silica fiber — Technology for Manufacturing Silica fiber.Water containing water glass fibers are disclosed, substantially free from non alkaline compounds and having a water content of from about 15 to 30% by weight, a tear strength of from about 5 to 30 cN/tex … Wikipedia
SiO2 — Quartz Quartz, n. [G. quarz.] (Min.) A form of silica, or silicon dioxide ({SiO2}), occurring in hexagonal crystals, which are commonly colorless and transparent, but sometimes also yellow, brown, purple, green, and of other colors; also in… … The Collaborative International Dictionary of English
Silica- — Sị|li|ca [engl. silica (zu ↑ Silic ) = Siliciumdioxid]; S: Silika : Bestimmungswort von Zus. mit der Bed. »aus SiO2 oder Quarz bestehend oder hergestellt«, z. B. Silicagel, Silikagel (↑ Kieselgel), Silicastein, Silikastein (↑ Keramik), ↑… … Universal-Lexikon
silica — noun Etymology: New Latin, from Latin silic , silex hard stone, flint Date: circa 1801 silicon dioxide SiO2 occurring in crystalline, amorphous, and impure forms (as in quartz, opal, and sand respectively) … New Collegiate Dictionary
silica — ALASKA VOLCANO OBSERVATORY GLOSSARY A chemical combination of silicon and oxygen. GLOSSARY OF VOLCANIC TERMS The chemical compound silicon dioxide, SiO2 … Glossary of volcanic terms
