Microcline

Definitions

  • Webster's Revised Unabridged Dictionary
    • n Microcline (Min) A mineral of the feldspar group, like orthoclase or common feldspar in composition, but triclinic in form.
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Century Dictionary and Cyclopedia
    • n microcline A feldspar identical in composition with orthoclase, but belonging to the triclinic system. Thin sections often exhibit a peculiar grating-like structure in polarized light, due to double twinning. Much of the potash feldspar called orthoclase is really microcline, and the beautiful green feldspar called Amazon stone is here included. See feldspar and orthoclase.
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Etymology

Webster's Revised Unabridged Dictionary
Micro-, + Gr. to incline

Usage

In literature:

See ALBITE, AMAZON STONE, ANDESINE, ANORTHITE, BYTOWNITE, LABRADORITE, MICROCLINE, MOONSTONE, OLIGOCLASE, ORTHOCLASE, PLAGIOCLASE, SUN-STONE.
"Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 2" by Various
The felspar of the granulites is mostly orthoclase or cryptoperthite; microcline, oligoclase and albite are also common.
"Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3" by Various
At Danbury the mineral occurs with microcline and oligoclase embedded in dolomite.
"Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 9" by Various
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