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anorthite |
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anorthite (ănôr`thīt): see feldspar feldspar (fĕl`spär, fĕld`–) or felspar ..... Click the link for more information. . anorthiteFeldspar mineral, calcium aluminosilicate (CaAl2Si2O8), that occurs as white or grayish, brittle, glassy crystals. Primarily a rock-forming mineral, it is used in the manufacture of glass and ceramics. Anorthite occurs in basic igneous rocks (see acid and basic rocks). anorthite [ə′nȯr‚thīt] (mineralogy) The white, grayish, or reddish calcium-rich end member of the plagioclase feldspar series; composition ranges from Ab10An90to Ab0An100, where Ab = NaAlSi3O8and An = CaAl2Si2O8. Also known as calciclase; calcium feldspar. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| 8]) that show continuous solid solution from albite to anorthite, with CaAl replacing NaSi as the series progresses. PHOTO : CL micrograph of a buildup sample showing anorthite (yellow), corundum (red) and hercynite (black) crystals. |
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