oligoclases

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A form of oligoclase — 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.

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Meanings

noun
  1. pluralplural of oligoclase
Cite this entry
APA

oligoclases. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/oligoclases

MLA

“oligoclases.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/oligoclases. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “oligoclases,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/oligoclases.

Source: oligoclases on Wiktionary, CC BY-SA 4.0.