Mineralogy Database

Gittinsite Mineral Data

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General Gittinsite Information

Help on Chemical  Formula: Chemical Formula: CaZrSi2O7
Help on Composition: Composition: Molecular Weight = 299.47 gm
   Calcium    13.38 %  Ca   18.73 % CaO
   Zirconium  30.46 %  Zr   41.15 % ZrO2
   Silicon    18.76 %  Si   40.13 % SiO2
   Oxygen     37.40 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaZrSi2O7
Help on Environment: Environment: In eudialyte-rich pegmatitic lenses in a regionally metamorphosed agpaitic syenite complex (Kipawa River, Canada).
Help on IMA Status: IMA Status: Approved IMA 1980
Help on Locality: Locality: She´┐Żeld Lake complex, Kipawa River, Villedieu Township, Quebec, Canada. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for John Gittins, Canadian petrologist, University of Toronto, Toronto, Ontario, Canada.
Help on Name Pronunciation: Name Pronunciation: Gittinsite + Pronunciation Say GITTINSITE
Help on Synonym: Synonym: ICSD 203131
  PDF 33-322

Gittinsite Image

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  Gittinsite   Eudialyte

Comments: White crystalline gittinsite with red eudialyte.
Location: Kipiwa Complex, Villedieu Township, Quebec, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Gittinsite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7929:1:0.5415
Help on Cell Dimensions: Cell Dimensions: a = 6.878, b = 8.674, c = 4.697, Z = 2; beta = 101.74° V = 274.36 Den(Calc)= 3.62
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.155(1), 3.026(0.8), 3.232(0.8),

Physical Properties of Gittinsite

Help on Cleavage: Cleavage: None
Help on Color: Color: Lemon white.
Help on Density: Density: 3.62
Help on Hardness: Hardness: 3.5-4 - Copper Penny-Fluorite
Help on Streak: Streak: white

Optical Properties of Gittinsite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.036 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.036 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.202,KPDmeas= 0.202,KC= 0.2096
Ncalc = 1.76
Help on Optical Data: Optical Data: Biaxial (-), a=1.72, b=1.736, g=1.738, bire=0.0180, 2V(Calc)=38, 2V(Meas)=30.

Calculated Properties of Gittinsite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.48 gm/cc
note: Specific Gravity of Gittinsite =3.62 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PEGittinsite = 43.15 barns/electron
U=PEGittinsite x rElectron Density= 150.22 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Gittinsite is Not Radioactive

Gittinsite Classification

Help on  Dana Class: Dana Class: 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
55.02.01a.01 Gittinsite CaZrSi2O7 C 2/m 2/m
55.02.01a.02 Keiviite-(Y) (Y,Yb)2Si2O7 C 2/m 2/m
55.02.01a.03 Keiviite-(Yb) (Yb,Y)2Si2O7 C 2/m 2/m
55.02.01a.04 Thortveitite (Sc,Y)2Si2O7 C 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.BC.05 09 - SILICATES (Germanates)
  09.B - Sorosilicates
  09.BC -Si2O7 groups, without non-tetrahedral anions;
09.BC.05 Keiviite-(Y) (Y,Yb)2Si2O7 C 2/m 2/m
09.BC.05 Gittinsite CaZrSi2O7 C 2/m 2/m
09.BC.05 Keiviite-(Yb) (Yb,Y)2Si2O7 C 2/m 2/m
09.BC.05 Thortveitite (Sc,Y)2Si2O7 C 2/m 2/m
09.BC.05 Yttrialite-(Y) (Y,Th)2Si2O7 P 21/m 2/m

Other Gittinsite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Gittinsite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: 55.02.01a.01 Strunz No: 09.BC.05





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