Mineral Information and Data:

Finnemanite
Pb5(As3+O3)3Cl [CNMNC approved formula]

Named for K.J. Finneman who discovered the mineral.

IMA status : Valid species (Pre-IMA 1923) Grandfathered
CLASSIFICATION 
Dana
(8th edition) :
46.01.01.01  
  (46) Basic or Halogen-Containing Antimonites, Arsenites and Phosphites
  (46.01) where (A B)m (XO3)p Zq
  (46.01.01)
  
Nickel-Strunz
(10th edition) :
04.JB.45
  (04) Oxides and Hydroxides
  (04.J) Arsenites, Antimonites, Bismuthites, Sulfites,
  (04.JB) Arsenites, antimonites, bismuthites; with additional anions, without H2O
  
Crystal system: Hexagonal System
Point group (H-M): 6 — pyramidal
  
  
  

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