Mineral Information and Data:

Tunellite
SrB6O9(OH)2 • 3H2O [CNMNC approved formula]

Named for George Tunnel (1900-1996), U. S. Mineralogist.

IMA status : Approved Species 1961 ()
CLASSIFICATION 
Dana
(8th edition) :
26.06.06.02  
  (26) Hydrated Borates Containing Hydroxyl or Halogen
  (26.06)
  (26.06.06)
  
Nickel-Strunz
(10th edition) :
06.FC.05
  (06) Borates
  (06.F) Hexaborates
  (06.FC) Phyllo-hexaborates
  
Crystal system: Monoclinic System
Point group (H-M): 2/m — prismatic
  
  
  

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