Mineral Information and Data:

Sieleckiite
Cu3Al4(PO4)2(OH)12 • 2H2O [CNMNC approved formula]

Named for Robert Sielecki (1958-), Australian geologist.

IMA status : Approved Species 1988 ()
CLASSIFICATION 
Dana
(8th edition) :
42.13.12.01  
  (42) Hydrated Phosphates Containing Hydroxyl or Halogen
  (42.13)
  (42.13.12)
  
Nickel-Strunz
(10th edition) :
08.DF.25
  (08) Phosphates, Arsenates, Vanadates
  (08.D) Phosphates, etc
  (08.DF) With only medium-sized cations, (OH,etc.):RO4 > 3:1
  
Crystal system: Triclinic System
Point group (H-M): Unknown — Unk
  
  
  

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