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microcline |
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microcline: see feldspar feldspar (fĕl`spär, fĕld`–) or felspar ..... Click the link for more information. . microclineCommon feldspar mineral, one form of potassium aluminosilicate (KAlSi3O8) that occurs in many rock types. Green specimens are called amazonstone and may be used as gems. It is an end-member composition in the alkali feldspar series. See also orthoclase. microcline [′mī·krə‚klīn] (mineralogy) KAlSi3O8A triclinic potassium-rich feldspar, usually containing minor amounts of sodium; may be clear, white, pale-yellow, brick-red, or green, and is generally characterized by crosshatch twinning. 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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| Leary-Alsip bricks contain quartz, microcline and muscovite in contrast with the Stephen bricks, which contain diopside and quartz. Those researchers dated samples of a mineral called microcline, pulled up during drilling in the 1950s. Foster occurs in miarolitic cavities containing gem-quality fluorite, microcline, phenacite ([Be. |
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