Mineral Information and Data:

Thometzekite
PbCu2+2(AsO4)2 • 2H2O [CNMNC approved formula]

Named for Wilhelm Thometzek, former General Manager of the Tsumeb mining company.

IMA status : Approved Species 1985 ()
CLASSIFICATION 
Dana
(8th edition) :
40.02.09.03  
  (40) Hydrated Phosphates
  (40.02) where A++ (B++)2 (XO4) · x(H2O)
  (40.02.09) Helmutwinklerite Subgroup
  
Nickel-Strunz
(10th edition) :
08.CG.15
  (08) Phosphates, Arsenates, Vanadates
  (08.C) Phosphates without Additional Anions, with H2O
  (08.CG) With large and medium-sized cations, RO4:H2O = 1:1
  
Crystal system: Monoclinic System
Point group (H-M): 2/m — prismatic
  
  
  

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