- silica rock
- Нефтегазовая техника кремнистая порода
Универсальный англо-русский словарь. Академик.ру. 2011.
silica rock
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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
rock crystal — transparent quartz, esp. when colorless. [1660 70] * * * Transparent variety of the silica mineral quartz that is valued for its clarity and total lack of colour or flaws. Rock crystal formerly was used extensively as a gemstone, but it has been… … Universalium
silica — n. silicon compound occurring in flint, quartz and sand. ♦ siliceous, ♦ silicic, a. ♦ silicicolous, a. growing in flinty soil. ♦ siliciferous, a. producing silica or silicon. ♦ silicify, v.t. convert into silica. ♦ silicon, n … Dictionary of difficult words
rock — rock1 rockless, adj. rocklike, adj. /rok/, n. 1. a large mass of stone forming a hill, cliff, promontory, or the like. 2. Geol. a. mineral matter of variable composition, consolidated or unconsolidated, assembled in masses or considerable… … Universalium
Rock — /rok/, n. a male given name. * * * I In geology, a naturally occurring and coherent aggregate of minerals. The three major classes of rock igneous, sedimentary, and metamorphic are based on the processes that formed them. These three classes are… … Universalium
Rock cycle — rocks do not remain in equilibrium and are forced to change as they encounter new environments. The rock cycle is an illustration that explains how the 3 rock types are related to each other and how processes change from one type to another over… … Wikipedia
rock varnish — A thin, dark, shiny film or coating, composed of iron oxide accompanied by traces of manganese oxide and silica, formed on the surfaces of pebbles, boulders, and other rock fragments, commonly on rock outcrops in arid regions. It is believed… … Glossary of landform and geologic terms
rock crystal — noun clear, colourless form of the silica based mineral quartz, often called pure quartz or clear quartz … Wiktionary
silica (SiO2) — most common mineral component of rock … Geography glossary
rock crystal — quartz; a transparent form of silicon dioxide (silica), SiO2; used for lenses … Medical dictionary
Dinas Rock — (Welsh: Craig y Ddinas, Fortress Rock ) is a high promontory of carboniferous limestone which rises between the Afon Mellte and its left bank tributary, the Afon Sychryd on the border between the county of Powys and the county borough of Neath… … Wikipedia
