Mineral Information and Data:

Jamesite
Pb2Zn2(Fe3+,Zn)5(OH,O)10(AsO4)4 [CNMNC approved formula]

Named for Christopher James, one of the first mining engineers at the Tsumeb mine, Namibia.

IMA status : Approved Species 1981 ()
CLASSIFICATION 
Dana
(8th edition) :
41.11.02.01  
  (41) Anhydrous Phosphates Containing Hydroxyl or Halogen
  (41.11) with miscellaneous formulae
  (41.11.02)
  
Nickel-Strunz
(10th edition) :
08.BK.25
  (08) Phosphates, Arsenates, Vanadates
  (08.B) Phosphates, etc. with Additional Anions, without H2O
  (08.BK) With medium-sized and large cations, (OH, etc.):RO4 = 2:1, 2.5:1
  
Crystal system: Triclinic System
Point group (H-M): 1 — pinacoidal
  
  
  

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