Mineral Information and Data:

Silhydrite
Si3O6 • H2O [CNMNC approved formula]

Named for its composition, a silica hydrate.

IMA status : Approved Species 1972 ()
CLASSIFICATION 
Dana
(8th edition) :
75.02.04.01  
  (75) Tectosilicate Si Tetrahedral Frameworks
  (75.02) with H2O and organics
  (75.02.04)
  
Nickel-Strunz
(10th edition) :
04.FM.30
  (04) Oxides and Hydroxides
  (04.F) Hydroxides (without V or U)
  (04.FM) Hydroxides with H2O +- (OH); unclassified
  
Crystal system: Orthorhombic System
Point group (H-M): Unknown — Unk
  
  
  

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