Mineral Information and Data:

Cancrisilite
Na7(Si7Al5)O24(CO3) • 3H2O [CNMNC approved formula]

Named for the relatively high ration of silicon to aluminum, and its relation to "cancrinite.".

IMA status : Approved Species 1991 ()
CLASSIFICATION 
Dana
(8th edition) :
76.02.05.04  
  (76) Tectosilicate Al-Si Framework
  (76.02) Feldspathoids and related species
  (76.02.05) Cancrinite group
  
Nickel-Strunz
(10th edition) :
09.FB.05
  (09) Silicates
  (09.F) Tektosilicates without Zeolitic H2O
  (09.FB) Tektosilicates with additional anions
  
Crystal system: Hexagonal System
Point group (H-M): 6 — pyramidal
  
  
  

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