anorthoclase sanidine


English-Russian dictionary of geology. 2011.

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  • Sanidine — Catégorie IX : silicates[1] Azulicite (Var. Sanidine) Mina La Pili, Chihuahua, Mexique. (3.5x2.2 cm) …   Wikipédia en Français

  • Sanidine — is the high temperature form of potassium feldspar (K,Na)(Si,Al)4O8. [Mineral Handbook ] Sanidine most typically occurs in felsic volcanic rocks such as obsidian, rhyolite and trachyte. Sanidine… …   Wikipedia

  • sanidine — sanidinic /san i din ik/, adj. /san i deen , din/, n. Mineral. a glassy, often transparent variety of orthoclase in which sodium may replace as much as 50 percent of the potassium: forms phenocrysts in some igneous rocks. [1805 15; < G Sanidin,… …   Universalium

  • Anorthoclase — Microcline Microcline Catégorie IX : silicates Microcline …   Wikipédia en Français

  • anorthoclase — /an awr theuh klays , klayz /, n. Mineral. a variety of microcline, rich in sodium and sometimes having a play of color: sometimes considered a variety of orthoclase. [AN 1 + ORTHOCLASE] * * *       any member of a continuous series of feldspar… …   Universalium

  • feldspar — /feld spahr , fel /, n. any of a group of minerals, principally aluminosilicates of potassium, sodium, and calcium, characterized by two cleavages at nearly right angles: one of the most important constituents of igneous rocks. Also, felspar.… …   Universalium

  • Trachyte — is an igneous, volcanic rock with an aphanitic to porphyritic texture. The mineral assemblage consists of essential alkali feldspar; relatively minor plagioclase and quartz or a feldspathoid such as nepheline may also be present. (See the QAPF… …   Wikipedia

  • Feldspar — is the name of a group of rock forming minerals which make up as much as 60% of the Earth s crust.Feldspar. [http://www.ima industrial minerals/feldspar.asp What is Feldspar?] Industrial Minerals Association. Retrieved on July 18… …   Wikipedia

  • Microcline — Microcline[1] Catégorie IX : silicates[2] …   Wikipédia en Français

  • Tuff — (from the Italian tufo ) is a type of rock consisting of consolidated volcanic ash ejected from vents during a volcanic eruption. Tuff should not be confused with tufa , another type of rock. Volcanic ashThe products of a volcanic eruption are… …   Wikipedia

  • List of minerals — This is a List of minerals for which there are Wikipedia articles. Mineral variety names and mineraloids are to be listed after the valid minerals for each letter.For a complete listing (about 4,000) of all mineral names: List of minerals… …   Wikipedia

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