Orthoclase

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The American Heritage® Dictionary of the English Language, 4th Edition
  • n. A variety of feldspar, essentially potassium aluminum silicate, KAlSi3O8, characterized by a monoclinic crystalline structure and found in igneous or granitic rock. Also called potash feldspar.
  • Wiktionary, Creative Commons Attribution/Share-Alike License
  • n. Potassium aluminum silicate, KAlSi3O8, a common feldspar of igneous, plutonic, and metamorphic rocks. Orthoclase is the main feldspar of pegmatite occurrences, where it is most commonly flesh-colored. Orthoclase is used in the ceramic and glass industries and as a decorative gravel.
  • the GNU version of the Collaborative International Dictionary of English
  • n. Common or potash feldspar crystallizing in the monoclinic system and having two cleavages at right angles to each other. See feldspar.
  • The Century Dictionary and Cyclopedia
  • n. Common or potash feldspar, a silicate of aluminium and potassium, occurring in monoclinic crystals and also massive.
  • WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
  • n. a white or colored monoclinic feldspar
  • Hypernym
    Words that are more generic or abstract
    feldspar    felspar   
    Variant
    feldspar   
    Same Context
    Words that are found in similar contexts
    calcite    locater    bitartrate    sienite    millipede