Crystal Structure of Potassium iron dimagnesium phyllo-alumotrisilicate dihydroxide


American Mineralogist (1990) 75, 305-313


Chemical namePotassium iron dimagnesium phyllo-alumotrisilicate dihydroxide
Mineral nameBiotite
FormulaAlFeH2KMg2O12Si3
a (Å)5.345(1)
b (Å)9.258(2)
c (Å)10.222(2)
α (°)90
β (°)100.23(2)
γ (°)90
V (Å3)497.8
Space groupC 1 2/m 1