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anorthiteenUK
an·or·thite A0322200 (ăn-ôr′thīt)n. A white to gray variety of plagioclase feldspar that contains a high proportion of calcium to sodium and occurs in alkaline igneous rocks such as gabbro and anorthosite.
[From Greek an-, not; see a-1 + orthos, straight (from its oblique crystals).]
an′or·thit′ic (-thĭt′ĭk) adj.anorthite (ænˈɔːθaɪt) n (Minerals) a white to greyish-white or reddish-white mineral of the feldspar group and plagioclase series, found chiefly in igneous rocks and more rarely in metamorphic rocks. It is used in the manufacture of glass and ceramics. Composition: calcium aluminium silicate. Formula: CaAl2Si2O8. Crystal structure: triclinic[C19: from an- + ortho- + -ite1] anorthitic adjan•or•thite (ænˈɔr θaɪt)
n. a white or gray feldspar mineral, CaAl2Si2O8, calcic plagioclase. [1823; an-1 + Greek orth(ós) straight + -ite1] an`or•thit′ic (-ˈθɪt ɪk) adj. Thesaurus| Noun | 1. |  anorthite - rare plagioclastic feldspar occurring in many igneous rocksoligoclase, plagioclase - any of a series of triclinic feldspars that form rocks |
TranslationsanorthiteenUK
anorthite (ănôr`thīt): see feldsparfeldspar
or felspar
, an abundant group of rock-forming minerals which constitute 60% of the earth's crust. Chemically the feldspars are silicates of aluminum, containing sodium, potassium, iron, calcium, or barium or combinations of these elements.
..... Click the link for more information. .anorthite[ə′nȯr‚thīt] (mineralogy) The white, grayish, or reddish calcium-rich end member of the plagioclase feldspar series; composition ranges from Ab10 An90 to Ab0 An100, where Ab = NaAlSi3O8 and An = CaAl2Si2O8. Also known as calciclase; calcium feldspar. anorthiteenUK
Related to anorthite: labradoriteWords related to anorthitenoun rare plagioclastic feldspar occurring in many igneous rocksRelated Words |