What does potassium feldspar mean?

Word Pronunciation & Dictionary

potassium feldspar

Word Rarity Very rare

Frequency: Zipf frequency 2.42 in modern English

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noun

potassium feldspars (plural)

adularia antiperthite foyaite microcline orthoclase perthite sonidine valencianite

What does potassium feldspar mean?: Any of several alkaline feldspars containing potassium aluminium silicate, KAlSi₃O₈

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