Mineral Information and Data:

Mammothite
Pb6Cu4AlSb5+O2(SO4)2Cl4(OH)16 [CNMNC approved formula]

Named for the locality: Mammoth vein, Tiger, Arizona, USA.

IMA status : Approved Species 1985 ()
CLASSIFICATION 
Dana
(8th edition) :
30.01.14.01  
  (30) Anhydrous Sulfates Containing Hydroxyl or Halogen
  (30.01) where (A B)m (XO4)p Zq where m:p>2:1
  (30.01.14)
  
Nickel-Strunz
(10th edition) :
07.BC.60
  (07) Sulfates (selenates, tellurates, chromates, molybdates, wolframates)
  (07.B) Sulfates (selenates, etc.) with Additional Anions, without H2O
  (07.BC) With medium-sized and large cations
  
Crystal system: Monoclinic System
Point group (H-M): 2/m — prismatic
  
  
  

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