orthoclase

English

Orthoclase

Etymology

From ortho- +‎ -clase.

Noun

orthoclase (countable and uncountable, plural orthoclases)

1. (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.

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 (1997–2025) “Orthoclase”, in Webmineral Mineralogy Database.
• “orthoclase”, in Mindat.org‎^[1], Hudson Institute of Mineralogy, 2000–2025.