Definition of oligoclase Oligoclase
ol•i•go•clase
We found 5 definitions of oligoclase from 5 different sources.
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What does oligoclase mean?
WordNet
Noun |
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| oligoclase - any of a series of triclinic feldspars that form rocks | ||
| plagioclase | ||
| feldspar, felspar any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium | ||
| basalt the commonest type of solidified lava; a dense dark grey fine-grained igneous rock that is composed chiefly of plagioclase feldspar and pyroxene | ||
| dacite a grey volcanic rock containing plagioclase and quartz and other crystalline minerals | ||
| albite, white feldspar a widely distributed feldspar that forms rocks | ||
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Wiktionary 
- oligoclase (Noun)
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.
Webster DictionaryWebster's Unabridged Dictionary 📘
- oligoclase (n.)
A triclinic soda-lime feldspar. See Feldspar.
Chambers DictionaryChamber's 20th Century Dictionary 📕
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oligoclase
ol′i-gō-klās, n. a soda-lime triclinic feldspar
Part of speech
🔤- oligoclase, noun, singular of oligoclases.
Pronunciation
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