Mineral Information and Data:

Zunyite
Al13Si5O20(OH,F)18Cl [CNMNC approved formula]

Named for the locality: Zuni mine, Anvil Mountain, Silverton, San Juan County, Colorado, USA.

IMA status : Valid species (Pre-IMA 1884) Grandfathered
CLASSIFICATION 
Dana
(8th edition) :
57.03.01.01  
  (57) Sorosilicate Insular Si3O10 and Larger Noncyclic Groups
  (57.03) with [Si5O16] groups
  (57.03.01)
  
Nickel-Strunz
(10th edition) :
09.BJ.55
  (09) Silicates
  (09.B) Sorosilicates (dimer) structures
  (09.BJ) Sorosilicates with Si3O10, Si4O11, etc. anions; cations in octahedral [6] and greater coordination
  
Crystal system: Cubic System
Point group (H-M): 43m (or 4 3m) — hextetrahedral
  
  
  

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