Mineral Information and Data:

Zykaite
Fe3+4(AsO4)3SO4(OH) • 15H2O [CNMNC approved formula]

Named for Vaclav Zyka (1926-), Czech geochemist.

IMA status : Approved Species 1978 ()
CLASSIFICATION 
Dana
(8th edition) :
43.05.03.02  
  (43) Compound Phosphates
  (43.05) (Hydrated Compound Anions With Hydroxyl or Halogen)
  (43.05.03) Pitticite Group
  
Nickel-Strunz
(10th edition) :
08.DB.45
  (08) Phosphates, Arsenates, Vanadates
  (08.D) Phosphates, etc
  (08.DB) With only medium-sized cations, (OH, etc.):RO4< 1:1
  
Crystal system: Orthorhombic System
Point group (H-M): Unknown — Unk
  
  
  

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