Crystal Structure of (Mn19.50 Mg4.44) (V2.38 As1.12 Si2.76) O27.3 (O H)21.3


American Mineralogist (2001) 86, 1494-1505


Chemical name(Mn19.50 Mg4.44) (V2.38 As1.12 Si2.76) O27.3 (O H)21.3
FormulaAs1.12Mg4.44Mn19.5O45.6Si2.76V2.38
a (Å)8.259
b (Å)8.259
c (Å)204.3
α (°)90
β (°)90
γ (°)120
V (Å3)12068.518
Space groupR -3 c :H