Mineral Information and Data:

Gittinsite
CaZrSi2O7 [CNMNC approved formula]

Named for John Gittins, Canadian petrologist, University of Toronto, Toronto, Ontario, Canada.

IMA status : Approved Species 1980 ()
CLASSIFICATION 
Dana
(8th edition) :
55.02.01a.01  
  (55) Sorosilicate Si2O7 Groups, Generally with No Additional Anions
  (55.02) with cations in [6] coordination
  (55.02.01a) Thortveitite group
  
Nickel-Strunz
(10th edition) :
09.BC.05
  (09) Silicates
  (09.B) Sorosilicates (dimer) structures
  (09.BC) Si2O7 groups, without non-tetrahedral anions; cations in octahedral [6] and greater coordination
  
Crystal system: Monoclinic System
Point group (H-M): 2/m — prismatic
  
  
  

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