Mineral Information and Data:

Botallackite
Cu2Cl(OH)3 [CNMNC approved formula]

Named for the occurrence in the Botallack mine, Cornwall, England.

IMA status : Valid species (Pre-IMA 1865) Grandfathered
CLASSIFICATION 
Dana
(8th edition) :
10.01.03.01  
  (10) Oxyhalides and Hydroxyhalides
  (10.01) where (A)2 (O,OH)3 Xq
  (10.01.03)
  
Nickel-Strunz
(10th edition) :
03.DA.10b
  (03) Halides
  (03.D) Oxyhalides, Hydroxyhalides and Related Double Halides
  (03.DA) With Cu, etc., without Pb
  
Crystal system: Monoclinic System
Point group (H-M): 2/m — prismatic
  
  
  

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