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potassium feldspar
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English
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Noun
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potassium
feldspar
(
plural
potassium feldspars
)
(
mineralogy
)
Any of several
alkaline
feldspars containing
potassium aluminium silicate
, KAlSi
3
O
8
See also
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adularia
antiperthite
foyaite
microcline
orthoclase
perthite
sonidine
valencianite