oligoclase
English edit
Etymology edit
Noun edit
oligoclase (usually uncountable, plural oligoclases)
- (mineralogy) A plagioclase feldspar, the second member of the Albite-Anorthite solid solution series. Primarily found as small crystals in impure marble. Oligoclase contains a small amount of calcium substituting for some of the sodium in its formula. Oligoclase with reddish-golden inclusions found in Norway and Canada is called sunstone.
See also edit
oligoclase on Wikipedia.Wikipedia - rock
- feldspar
- plagioclase
Further reading edit
- David Barthelmy (1997–2024) “Oligoclase”, in Webmineral Mineralogy Database.
- “oligoclase”, in Mindat.org[1], Hudson Institute of Mineralogy, 2000–2024.
Anagrams edit
French edit
Noun edit
oligoclase f (plural oligoclases)
Further reading edit
- “oligoclase”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.