Mineral Information and Data:

Gravegliaite
Mn2+S4+O3 • 3H2O [CNMNC approved formula]

Named for the locality: Gambatesa mine, near Reppia, Val Graveglia, Liguria, Italy.

IMA status : Approved Species 1991 ()
CLASSIFICATION 
Dana
(8th edition) :
34.02.05.02  
  (34) Selenites - Tellurites - Sulfites
  (34.02) as A++ XO3 · x(H2O)
  (34.02.05)
  
Nickel-Strunz
(10th edition) :
04.JE.05
  (04) Oxides and Hydroxides
  (04.J) Arsenites, Antimonites, Bismuthites, Sulfites,
  (04.JE) Sulfites
  
Crystal system: Orthorhombic System
Point group (H-M): mmm (or 2/m 2/m 2/m) — dipyramidal
  
  
  

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