Mineral Information and Data:

Goedkenite
Sr2Al(PO4)2(OH) [CNMNC approved formula]

Named for V. L. Goedken.

IMA status : Approved Species 1975 ()
CLASSIFICATION 
Dana
(8th edition) :
41.10.04.01  
  (41) Anhydrous Phosphates Containing Hydroxyl or Halogen
  (41.10) where (A++ B++)3 (XO4)2 Zq
  (41.10.04) Goedkenite Group
  
Nickel-Strunz
(10th edition) :
08.BG.05
  (08) Phosphates, Arsenates, Vanadates
  (08.B) Phosphates, etc. with Additional Anions, without H2O
  (08.BG) With medium-sized and large cations, (OH, etc.):RO4 = 0.5:1
  
Crystal system: Monoclinic System
Point group (H-M): 2/m — prismatic
  
  
  

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