Mineral Information and Data:

Cornubite
Cu5(AsO4)2(OH)4 [CNMNC approved formula]

Named from Cornubia, the Latin name for Cornwall, source of the first specimens.

IMA status : Approved Species 1959 ()
CLASSIFICATION 
Dana
(8th edition) :
41.04.02.01  
  (41) Anhydrous Phosphates Containing Hydroxyl or Halogen
  (41.04) where (A B)5 (XO4)2 Zq
  (41.04.02)
  
Nickel-Strunz
(10th edition) :
08.BD.30
  (08) Phosphates, Arsenates, Vanadates
  (08.B) Phosphates, etc. with Additional Anions, without H2O
  (08.BD) With only medium-sized cations, (OH, etc.):RO4= 2:1
  
Crystal system: Triclinic System
Point group (H-M): 1 — pinacoidal
  
  
  

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