(Fe,Mg,Al)6(Si,Al)4O10(OH)8
9.EC.55
CaB2Si2O8
orthorhombisch
9.FA.65
Ca2Fe3+Al2(Si2O7)(SiO4)O(OH)
monoklin
9.BG.05
Fe2O3
trigonal
4.CB.05
SiO2
4.DA.05