Dictionary
mi•cro•cline
Pronunciation: (mī'kru-klīn"), [key]—
n.
a mineral of the feldspar group, potassium aluminum silicate, KAlSi
3O
8, identical in composition with orthoclase but having triclinic instead of monoclinic crystals, used in making porcelain.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.