- quartz porphyry
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кварцевый или фельзитовый порфир
English-Russian dictionary of geology. 2011.
quartz porphyry
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Quartz-porphyry — Quartz porphyry, in petrology, is the name given to a group of hemi crystalline acid rocks containing porphyritic crystals of quartz in a fine grained matrix, usually of micro crystalline or felsitic structure. In specimens, the quartz appears as … Wikipedia
quartz-porphyry — quartz porˈphyry noun An igneous rock with crystals of quartz and feldspar in a compact or finely crystalline ground mass of the same • • • Main Entry: ↑quartz … Useful english dictionary
quartz porphyry — A medium grained igneous rock of granitic composition occurring normally as minor intrusions, and carrying prominent phenocrysts of quartz … Dictionary of automotive terms
quartz porphyry — noun : a porphyritic extrusive or dike rock in which quartz with more or less corroded crystals and orthoclase and usually mica, amphibole, or pyroxene occur as phenocrysts in a groundmass that is felsophyric, granophyric, or vitrophyric … Useful english dictionary
Porphyry copper deposit — Porphyry copper deposits are copper orebodies which are associated with porphyritic intrusive rocks and the fluids that accompany them during the transition and cooling from magma to rock. Circulating surface water or underground fluids may… … Wikipedia
Quartz monzonite — Igneous Rock Quartz monzonite bedrock from a UGSG drill core at Western Cape Cod, Massachusetts Quartz monzonite (or adamellite) is an intrusive igneous rock that has an approximately equal proportion of orthoclase and … Wikipedia
Porphyry (geology) — Porphyry is a variety of igneous rock consisting of large grained crystals, such as feldspar or quartz, dispersed in a fine grained feldspathic matrix or groundmass. The larger crystals are called phenocrysts. In its non geologic, traditional use … Wikipedia
Porphyry — Por phy*ry, n.; pl. {Porphyries}. [F. porphyre, L. porphyrites, fr. Gr. ? like purple, fr. ? purple. See {Purple}.] (Geol.) A term used somewhat loosely to designate a rock consisting of a fine grained base (usually feldspathic) through which… … The Collaborative International Dictionary of English
Porphyry shell — Porphyry Por phy*ry, n.; pl. {Porphyries}. [F. porphyre, L. porphyrites, fr. Gr. ? like purple, fr. ? purple. See {Purple}.] (Geol.) A term used somewhat loosely to designate a rock consisting of a fine grained base (usually feldspathic) through… … The Collaborative International Dictionary of English
porphyry copper deposit — A large body of igneous rock, having distinct crystals in a relatively fine grained base, that contains chalcopyrite and other sulfide minerals. These deposits contain vast amounts of ore that averages a fraction of 1% copper by weight; although… … Universalium
granite porphyry — granite porphyry, a coarse porphyry composed mainly of quartz and feldspar … Useful english dictionary
