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Webster 1913 Edition
Orthoclase
Or′tho-clase
,Noun.
[
Ortho-
+ Gr. [GREEK] to break.] (Min.)
Common or potash feldspar crystallizing in the monoclinic system and having two cleavages at right angles to each other. See
Feldspar
. Definition 2024
orthoclase
orthoclase
English
Orthoclase
Noun
orthoclase (countable and uncountable, plural orthoclases)
- (mineralogy) Potassium aluminum silicate, KAlSi3O8, a common feldspar of igneous, plutonic, and metamorphic rocks. Orthoclase is the main feldspar of pegmatite occurrences, where it is most commonly flesh-colored. Orthoclase is used in the ceramic and glass industries and as a decorative gravel.
Translations
potassium aluminum silicate
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