Mineral Information and Data:

Carletonite
KNa4Ca4Si8O18(CO3)4(F,OH) • H2O [CNMNC approved formula]

Named for Carleton University, Ottawa, Canada where it was first recognized.

IMA status : Approved Species 1971 ()
CLASSIFICATION 
Dana
(8th edition) :
72.03.01.04  
  (72) Phyllosilicate Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
  (72.03) with 3-, 4-, or 5-membered rings and 8-membered rings
  (72.03.01) Apophyllite group (4- & 8-membered rings)
  
Nickel-Strunz
(10th edition) :
09.EB.20
  (09) Silicates
  (09.E) Phyllosilicates
  (09.EB) Double nets with 4- and 6-membered rings
  
Crystal system: Tetragonal System
Point group (H-M): 4/mmm (or 4/m 2/m 2/m) — ditetragonal-dipyramidal
  
  
  

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