Mineral Information and Data:

Zincowoodwardite
Zn1-xAlx(OH)2(SO4)x2 • nH2O(x=0.32-0.50) [CNMNC approved formula]

Named as the Zn analog of woodwardite.

IMA status : Approved Species 1995 ()
CLASSIFICATION 
Dana
(8th edition) :
31.02.02.03  (This Dana# Added)
  (31) Hydrated Sulfates Containing Hydroxyl or Halogen
  (31.02) where (A+ B++)6 (XO4) Zq · x(H2O)
  (31.02.02) Woodwardite Group
  
Nickel-Strunz
(10th edition) :
07.DD.35
  (07) Sulfates (selenates, tellurates, chromates, molybdates, wolframates)
  (07.D) Sulfates (selenates, etc.) with additional anions, with H2O
  (07.DD) With only medium-sized cations; sheets of edge-sharing octahedra
  
Crystal system: Trigonal System
Point group (H-M): 3 — rhombohedral
  
  
  

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