Mineral Information and Data:

Beraunite
Fe2+Fe3+5(PO4)4(OH)5 • 6H2O [CNMNC approved formula]

Named for its occurrence near Beroun (formerly Beraun), Czech Republic.

IMA status : Valid species (Pre-IMA 1841) Grandfathered
CLASSIFICATION 
Dana
(8th edition) :
42.11.16.01  
  (42) Hydrated Phosphates Containing Hydroxyl or Halogen
  (42.11) where (AB)4 (XO4)3 Zq · x(H2O)
  (42.11.16)
  
Nickel-Strunz
(10th edition) :
08.DC.27
  (08) Phosphates, Arsenates, Vanadates
  (08.D) Phosphates, etc
  (08.DC) With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1
  
Crystal system: Monoclinic System
Point group (H-M): 2/m — prismatic
  
  
  

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