Mineral Information and Data:

Cacoxenite
(Fe3+)24AlO6(PO4)17(OH)12 • 75H2O [CNMNC approved formula]

Named From the Greek kakos, meaning "wrong" and xenos, meaning "guest.;".

IMA status : Valid species (Pre-IMA 1825) Grandfathered
CLASSIFICATION 
Dana
(8th edition) :
42.13.05.01  
  (42) Hydrated Phosphates Containing Hydroxyl or Halogen
  (42.13)
  (42.13.05)
  
Nickel-Strunz
(10th edition) :
08.DC.40
  (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: Hexagonal System
Point group (H-M): 6/mmm (or 6/m 2/m 2/m) — dihexagonal-dipyramidal
  
  
  

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