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Oligoclase - Wikipedia, the free encyclopedia
Oligoclase is a rock-forming mineral belonging to the plagioclase feldspars. In chemical composition and in its crystallographic and physical characters it is ...
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OLIGOCLASE (Sodium Calcium Aluminum Silicate)
Oligoclase is not a well-known mineral but has been used as a semi-precious stone under the names of sunstone and moonstone. Sunstone has flashes of reddish color ...
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Oligoclase Mineral Data - Mineralogy Database
[Newest Minerals] [Analytical Services] [Mineral Gallery] See Also: [Diamond Crystals] [Mineral News] [Hudson Institute] [Minerals on CDROM]
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Oligoclase: Oligoclase mineral information and data.
A plagioclase feldspar with an albite : anorthite molar ratio ranging from 90 : 10 to 70 : 30. Originally described from Danvikstull, Stockholm, Södermanland, Sweden.
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Oligoclase | Define Oligoclase at Dictionary.com
noun Mineralogy . a kind of plagioclase feldspar occurring commonly in white crystals, sometimes shaded with gray, green, or red. Origin: 1825–35; oligo- + -clase ...
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oligoclase - definition of oligoclase by the Free Online ...
ol·i·go·clase (l-g-kl s, -kl z, l-) n. See plagioclase. [oligo-+ Greek klasis, cleavage (from kl n, to break; see plagioclase).] oligoclase [ˈɒlɪgəʊˌkleɪs]
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Plagioclase - Wikipedia, the free encyclopedia
The name oligoclase is derived from the Greek for little and fracture, in reference to the fact that its cleavage angle differs significantly from 90°.
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Oligoclase, gemstones shopping at Multicolour.com
Natural Oligoclase at www.multicolour.com ... The feldspar group of minerals are important for the place they take in the formation of rocks.
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Oligoclase gemstone information - Gemstone Database - Gems ...
A feldspar comprising 70-90% Albite and 10-30% Anorthite. The name oligoclase derived from the Greek "oligos" - little, and "clasein" - to break, because the mineral ...
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oligoclase (mineral) -- Encyclopedia Britannica
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