orthoclase

English

Orthoclase

Etymology

ortho- +‎ -clase.

Noun

orthoclase (countable and uncountable, plural orthoclases)

(mineralogy) Potassium aluminum silicate, K Al Si₃O₈, 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.

Derived terms

orthoclasic

Translations

potassium aluminum silicate

Bashkir: ортоклаз (ortoklaz)
Bulgarian: ортоклаз (ortoklaz)
Chinese: 正長石／正长石 (zh) (zhèngchángshí), 正长石 (zh) (zhèngchángshí)
Czech: ortoklas m
Dutch: orthoklaas (nl)
Finnish: ortoklaasi
German: Orthoklas m
Hebrew: אורתוקלז (ōrtōqlaz)
Irish: ortaclás m
Japanese: 正長石 (せいちょうせき, seichōseki)
Kazakh: ортоклаз (ortoklaz)
Korean: 정장석(正長石) (jeongjangseok)
Kyrgyz: ортоклаз (ortoklaz)
Polish: ortoklaz m
Portuguese: ortoclase
Romanian: ortoză (ro) f
Russian: ортоклаз (ru) (ortoklaz)
Serbo-Croatian:
Cyrillic: ортоклаз

Roman: ortoklaz
Slovak: ortoklas
Spanish: ortoclasa (es) f, ortosa f
Swedish: ortoklas
Vietnamese: oc-to-cla

See also

rock, mineral, pegmatite
sanidine, adularia

Further reading

David Barthelmy (1997–2024) “Orthoclase”, in Webmineral Mineralogy Database.
“orthoclase”, in Mindat.org‎, Hudson Institute of Mineralogy, 2000–2024.

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