Mineral Information and Data:

Devilline
CaCu4(SO4)2(OH)6 • 3H2O [CNMNC approved formula]

Named after the French chemist, H. E. S. C. Deville (1818-1881). Named from its occurrence at Herrengrund, north of Neusohl, in Slovakia of Czechoslovakia.

IMA status : Approved Species 1864 ()
CLASSIFICATION 
Dana
(8th edition) :
31.06.01.01  
  (31) Hydrated Sulfates Containing Hydroxyl or Halogen
  (31.06) where (A+ B++)5 (XO4)2 Zq · x(H2O)
  (31.06.01)
  
Nickel-Strunz
(10th edition) :
07.DD.30
  (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: Monoclinic System
Point group (H-M): 2/m — prismatic
  
  
  

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