Mineral Information and Data:

Vuoriyarvite-K
(K,Na,[])12Nb8(Si4O12)4O8 • 12-16H2O [CNMNC approved formula]

Named The name reflects the discovery locality: Lake Vuoriyarvi and the Vuoriyarvi alkali-ultramafic complex, Kola Peninsula, Russia.

IMA status : Approved Species 1995 ()
CLASSIFICATION 
Dana
(8th edition) :
60.01.03b.01  (This Dana# Added)
  (60) Cyclosilicate Four-Membered Rings
  (60.01) as Titanosilicates
  (60.01.03b) Labuntsovite Group (Vuoriyarvite subgroup Monoclinic [Cm])
  
Nickel-Strunz
(10th edition) :
09.CE.30b
  (09) Silicates
  (09.C) Cyclosilicates
  (09.CE) [Si4O12]8- 4-membered single rings (vierer-Einfachringe), without insular complex anions
  
Crystal system: Monoclinic System
Point group (H-M): m — domatic
  
  
  

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