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[mahy-kruh-klahyn] /ˈmaɪ krəˌklaɪn/
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.
Origin of microcline
1840-50; micro- + -cline < Greek klī́nein to lean1, referring to the angles between its cleavage planes, which differ slightly from 90° Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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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
Word Origin
C19: from German Mikroklin, from mikro-micro- + Greek klinein to lean; so called because its cleavage plane is slightly different from 90°
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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microcline in Science
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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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