AM_Langbanite_1
Formula:
Sb3 Mn31.98 Ca.79 Mg.14 Fe6.09 Si6 O72
Name:
Langbanite
Unit cell:
11.561 20.05 11.075 90.0 90.03 90.0 , V=2567.16
Space group:
C12/M1 (12)
Giuseppetti G , Mazzi F , Tadini C , Neues Jahrbuch fur Mineralogie, Monatshefte , 1991 (1991) p.193-211, The crystal structure of monoclinic langbanite:, (Mn,Ca,Fe,Mg)2+4(Mn,Fe)3+9Sb5+[O16(SiO4)2], Locality: Langban, Sweden