Mineral Information and Data:

Katayamalite
KLi3Ca7Ti2(SiO3)12(OH)2 [CNMNC approved formula]

Named for Nobuo Katayama (1910-), prominent Japanese mineralogist.

IMA status : Approved Species 1983 ()
CLASSIFICATION 
Dana
(8th edition) :
61.01.04.02  
  (61) Cyclosilicate Six-Membered Rings
  (61.01) with [Si6O18] rings; possible (OH) and Al substitution
  (61.01.04) Baratovite group
  
Nickel-Strunz
(10th edition) :
09.CJ.25
  (09) Silicates
  (09.C) Cyclosilicates
  (09.CJ) [Si6O18]12- 6-membered single rings (sechser-Einfachringe), without insular complex anions
  
Crystal system: Triclinic System
Point group (H-M): 1 — pedial
  
  
  

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