Mineral Information and Data:

Sulfoborite
Mg3[B(OH)4]2(SO4)(OH,F)2 [CNMNC approved formula]

Named for the sulfur and boron in the composition.

IMA status : Valid species (Pre-IMA 1893) Grandfathered
CLASSIFICATION 
Dana
(8th edition) :
27.01.05.01  
  (27) Compound Borates
  (27.01)
  (27.01.05)
  
Nickel-Strunz
(10th edition) :
06.AC.55
  (06) Borates
  (06.A) Monoborates
  (06.AC) B(O,OH)4, without and with additional anions; 1(T), 1(T)+OH, etc
  
Crystal system: Orthorhombic System
Point group (H-M): mmm (or 2/m 2/m 2/m) — dipyramidal
  
  
  
Other Properties: H2O Soluble. Gemstone Extremely Rare.

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