alkali-calcic

См. также в других словарях:

• Mineral spring — For various place names, see Mineral Springs (disambiguation) The Mineral Spring, etching by Wenceslas Hollar (1607 1677). The unidentified central European spring features a sunken stone basin and ornamental retaining wall …   Wikipedia

• Moon rock — Olivine basalt collected by Apollo 15. Moon rock describes rock that formed on the Earth s moon. The term is also loosely applied to other lunar materials collected during the course of human exploration of the Moon. The rocks collect …   Wikipedia

• amphibole — /am feuh bohl /, n. Mineral. any of a complex group of hydrous silicate minerals, containing chiefly calcium, magnesium, sodium, iron, and aluminum, and including hornblende, tremolite, asbestos, etc., occurring as important constituents of many… …   Universalium

• Myrmekite — describes a vermicular, or wormy, intergrowth of quartz in plagioclase. The intergrowths are microscopic in scale, typically with maximum dimensions less than 1 millimeter. The plagioclase is sodium rich, usually albite or oligoclase. These… …   Wikipedia

• basalt — basaltic, basaltine /beuh sawl tin, tuyn/, adj. /beuh sawlt , bas awlt, bay sawlt/, n. the dark, dense igneous rock of a lava flow or minor intrusion, composed essentially of labradorite and pyroxene and often displaying a columnar structure.… …   Universalium

• Basalt — For the World War II raid, see Operation Basalt. For the cities, see Basalt, Colorado and Basalt, Idaho. Basalt Igneous Rock Composition …   Wikipedia

• Igneous rock — Geologic provinces of the world (USGS)   Shield …   Wikipedia

• metamorphic rock — Any of a class of rocks that result from the alteration of preexisting rocks in response to changing geological conditions, including variations in temperature, pressure, and mechanical stress. The preexisting rocks may be igneous, sedimentary,… …   Universalium

• olivine — olivinic /ol euh vin ik/, olivinitic /ol euh vi nit ik/, adj. /ol euh veen , ol euh veen /, n. Mineral. any of a group of magnesium iron silicates, (Mg,Fe)2SiO4, occurring in olive green to gray green masses as an important constituent of basic… …   Universalium

• Nephelinite — lava (grey) containing a xenolith of peridotite (yellow), Kaiserstuhl, Germany. Nephelinite is a fine grained or aphanitic igneous rock made up almost entirely of nepheline and clinopyroxene (variety augite). If olivine is present, the rock may… …   Wikipedia

• Lherzolite — is a type of ultramafic igneous rock. It is a coarse grained rock consisting of 40 to 90% olivine along with significant orthopyroxene and lesser calcic chromium rich clinopyroxene. Minor minerals include chromium and aluminium spinels and… …   Wikipedia