Mineral Information and Data:

Metaborite
HBO2 [CNMNC approved formula]

Named from the Greek meta, as a lesser hydrate than orthoboric acid.

IMA status : Approved Species 1964 ()
CLASSIFICATION 
Dana
(8th edition) :
24.05.01.01  
  (24) Borates - Anhydrous
  (24.05) with miscellaneous formulae
  (24.05.01)
  
Nickel-Strunz
(10th edition) :
06.GD.10
  (06) Borates
  (06.G) Heptaborates and other Megaborates
  (06.GD) Mega-tektoborates
  
Crystal system: Cubic System
Point group (H-M): 43m (or 4 3m) — hextetrahedral
  
  
  
Other Properties: H2O Soluble.

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