Mineral Information and Data:

Manganostibite
Mn2+7Sb5+As5+O12 [CNMNC approved formula]

Named for the MANGANese and antimony, STIBium, in the composition.

IMA status : Valid species (Pre-IMA 1884) Grandfathered
CLASSIFICATION 
Dana
(8th edition) :
44.03.02.01  
  (44) Antimonates
  (44.03) with miscellaneous formulae
  (44.03.02)
  
Nickel-Strunz
(10th edition) :
04.BA.10
  (04) Oxides and Hydroxides
  (04.B) Metal:Oxygen = 3:4 and similar
  (04.BA) With small and medium-sized cations
  
Crystal system: Orthorhombic System
Point group (H-M): mmm (or 2/m 2/m 2/m) — dipyramidal
  
  
  

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