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Webster 1913 Edition
Microcline
Mi′cro-cline
,Noun.
[
Micro-
+ Gr. [GREEK] to incline.] (Min.)
A mineral of the feldspar group, like orthoclase or common feldspar in composition, but triclinic in form.
Definition 2024
microcline
microcline
English
Noun
microcline (countable and uncountable, plural microclines)
- (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.