Mineral Information and Data:

Voronkovite
Na15(Na,Ca,Ce)3(Mn,Ca)3Fe3Zr3Si26O72(OH,O)4Cl • H2O [CNMNC approved formula]

Named for Alexander A. Voronkov (1928-1982), a prominent Russian crystallographer.

IMA status : Approved Species 2007 ()
CLASSIFICATION 
Dana
(8th edition) :
64.01.01.22  (This Dana# Added)
  (64) Cyclosilicates
  (64.01) Cyclosilicate Rings with Other Anions and Insular Silicate Groups with mixed ring types
  (64.01.01) Eudialyte Group
  
Nickel-Strunz
(10th edition) :
09.CO.10
  (09) Silicates
  (09.C) Cyclosilicates
  (09.CO) [Si9O27]18- 9-membered rings
  
Crystal system: Trigonal System
Point group (H-M): 3 — pyramidal
  
  
  

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