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Words related to orthoclase

or·tho·clase
O o

  • adularia

    a white or colourless glassy variety of orthoclase in the form of prismatic crystals. It occurs in metamorphic rocks and is a minor gemstone. Formula: KAlSi3O8

  • granite

    ice (def 4).

  • hyalophane

    a variety of orthoclase in which some of the potassium is replaced by barium.

  • microcline

    a mineral of the feldspar group, potassium aluminum silicate, KAlSi 3 O 8 , identical in composition with orthoclase but having triclinic instead of monoclinic crystals, used in making porcelain.

  • minette

    a syenitic lamprophyre composed chiefly of orthoclase and biotite.

  • monzonite

    any of a group of granular igneous rocks having approximately equal amounts of orthoclase and plagioclase feldspar, intermediate in composition between syenite and diorite.
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