The feldspar group includes:
alkali feldspar - ferrisanidine:
K(Fe3+Si3O8)
alkali feldspar - K-feldspar - microcline:
K(AlSi3O8)
alkali feldspar - K-feldspar - orthoclase:
K(AlSi3O8)
alkali feldspar - K-feldspar - sanidine:
K(AlSi3O8)
banalsite:
Na2BaAl4Si4O16
buddingtonite:
(NH4)(AlSi3)O8
celsian:
Ba(Al2Si2O8)
filatovite:
K(Al,Zn)2(As,Si)2O8
hexacelsian:
Ba(Al2Si2O8)
kokchetavite:
K(AlSi3O8)
kumdykolite:
Na(AlSi3O8)
paracelsian:
Ba(Al2Si2O8)
plagioclase - albite:
Na(AlSi3O8)
plagioclase - anorthite:
Ca(Al2Si2O8)
reedmergnerite:
NaBSi3O8
slawsonite:
Sr(Al2Si2O8)
stronalsite:
Na2SrAl4Si4O16
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