Aluminium cobalt iron hydrogen manganese magnesium nickel titanium silicate *

H_2.26Al_17.01Co_1.93Fe_1.87Mg_1.09Mn_.02Ni_.2O_47.3Si_7.75Ti_.11

Skerl, A CBannister, F AGroves, A W

Mineralogical Magazine and Journal of the Mineralogical Society (1876- 1968) (1934) 23, 598-606

a=7.86Å   b=16.62Å   c=5.65Å

α=90°   β=90°   γ=90°