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