mineral colour

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• colour index — In igneous petrology, the sum of the volume percentages of the coloured, or dark, minerals in the rock. The most common light coloured minerals are feldspars, feldspathoids, and silica or quartz; abundant dark coloured minerals include olivine,… …   Universalium

• colour — /kul euhr/, n., adj. v.t., v.i. Chiefly Brit. color. Usage. See or1. * * * I Aspect of any object that may be described in terms of hue, brightness, and saturation. It is associated with the visible wavelengths of electromagnetic radiation, which …   Universalium

• mineral processing — or ore dressing Mechanical treatment of crude ores to separate the valuable minerals. Mineral processing was at first applied only to ores of precious metals but later came to be used to recover other metals and nonmetallic minerals. It is also… …   Universalium

• colour — /ˈkʌlə / (say kuluh) noun 1. the evaluation by the visual sense of that quality of light (reflected or transmitted by a substance) which is basically determined by its spectral composition; that quality of a visual sensation distinct from form.… …  

• Mineral-insulated copper-clad cable — MIMS redirects here. For multi isotope imaging mass spectrometry, see Isotope mass spectrometry. PVC sheathed MICC cable. Conductor cross section area is 1.5 mm²; overall diameter is 7.2 mm …   Wikipedia

• clay mineral — any of a group of hydrous aluminum silicate minerals, as kaolinite, illite, and montmorillonite, that constitute the major portion of most clays. [1945 50] * * * Any of a group of important hydrous aluminum silicates with a layered structure and… …   Universalium

• 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

• Cairngorm (mineral) — This article is about the crystal. See Cairn Gorm for the Scottish mountain. See Cairngorm (Flex framework) for the open source software. Cairngorm, also known as Smoky quartz or Smokey quartz, is a variety of quartz crystal found in the… …   Wikipedia

• arsenate mineral —       any of a group of naturally occurring compounds of arsenic, oxygen, and various metals, most of which are rare, having crystallized under very restricted conditions. At the mineralogically famous Långban iron and manganese mines in central… …   Universalium

• streak — streakedly /streekt lee, stree kid lee/, adv. streakedness, n. streaker, n. streaklike, adj. /streek/, n. 1. a long, narrow mark, smear, band of color, or the like: streaks of mud. 2. a portion or layer of something, distinguished by color or… …   Universalium

• Krzeszowice — Infobox Settlement name = Krzeszowice image caption = St. Martins Church image shield = POL Krzeszowice COA.svg pushpin pushpin label position = bottom subdivision type = Country subdivision name = POL subdivision type1 = Voivodeship subdivision… …   Wikipedia