a triclinic feldspar, KAlSiO, that is dimorphic with orthoclase; potassium aluminum silicate
Origin of microclineGerman mikroklin ( from Classical Greek mikros, small + klinein, to incline: see lean): its cleavage angle differs slightly from 90°
A whitish gray, pink or green triclinic mineral of the potassium feldspar group that forms from relatively low-temperature magmas.
Origin of microclineGerman Mikroklin mikro- micro- (from the fact that its cleavage angle is not exactly equal to 90°) Greek klīnein to lean ; see cline .
- (mineralogy) A common feldspar of igneous, plutonic, and metamorphic rocks, made of potassium aluminum silicate, with the chemical formula KAlSi3O8. Microcline is the main feldspar of granite. The bluish-green variety is called amazonstone, and is sometimes of gem quality. Used in ceramics, ceramic glazes, and as a scouring powder.
micro- ("small") + -cline