microcline (redirected from Potassium aluminium silicate)

mi·cro·cline  (mkr-kln)

n.

A mineral of the feldspar group, chiefly KAlSi₃O₈, used in making glass, porcelain, and enamel.

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[Greek mkro-, micro- (from the fact that its cleavage angle is not exactly equal to 90°) + Greek klnein, to lean; see cline.]

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microcline [ˈmaɪkrəʊˌklaɪn]

n

(Earth Sciences / Minerals) a white, creamy yellow, red, or green mineral of the feldspar group, found in igneous, sedimentary, and metamorphic rocks: used in the manufacture of glass and ceramics. Composition: potassium aluminium silicate. Formula: KAlSi₃O₈. Crystal structure: triclinic

[from German Mikroklin, from mikro- micro- + Greek klinein to lean; so called because its cleavage plane is slightly different from 90°]

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microcline  (mkr-kln)

A white, pink, red-brown, or green type of potassium feldspar. It is dimorphous with orthoclase feldspar, differing from it in shape and in the fact that it forms at lower temperatures.Chemical formula: KAlSi₃O₈.