Mineralogy Database

Canasite Mineral Data

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General Canasite Information

Help on Chemical  Formula: Chemical Formula: (Na,K)6Ca5Si12O30(OH,F)4
Help on Composition: Composition: Molecular Weight = 1,257.57 gm
   Potassium   6.22 %  K     7.49 % K2O
   Sodium      7.31 %  Na    9.86 % Na2O
   Calcium    15.93 %  Ca   22.30 % CaO
   Silicon    26.80 %  Si   57.33 % SiO2
   Hydrogen    0.24 %  H     2.15 % H2O
   Oxygen     41.98 %  O
   Fluorine    1.51 %  F     1.51 % F
                -   %   F    -0.64 % -O=F2    
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na4K2Ca5Si12O30(OH)3F
Help on Environment: Environment: In pegmatites in a differentiated alkalic massif (Khibiny massif, Russia); in charoitic rocks (Murun massif, Russia).
Help on IMA Status: IMA Status: Approved IMA 1959
Help on Locality: Locality: On Mts. Yukspor and Rasvumshorr, Khibiny massif, Kola Peninsula, and in the Murun massif, southwest of Olekminsk, Yakutia, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For calcium, sodium, natrium, and silicon in the chemical composition.
Help on Synonym: Synonym: ICSD 20109
  PDF 13-553

Canasite Image

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Comments: Yellow translucent canasite grain with nepheline.
Location: Kirovskii Mine, Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Canasite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.6068:1:1.7406
Help on Cell Dimensions: Cell Dimensions: a = 18.9, b = 7.25, c = 12.62, Z = 2; beta = 112° V = 1,603.34 Den(Calc)= 2.60
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): 3.08(1), 1.641(0.8), 2.907(0.8),

Physical Properties of Canasite

Help on Cleavage: Cleavage: {???} Perfect
Help on Color: Color: Brownish yellow, Green yellow, Light green.
Help on Density: Density: 2.707
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Canasite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.042 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.002 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2071,KPDmeas= 0.1989,KC= 0.2075
Ncalc = 1.54 - 1.56
Help on Optical Data: Optical Data: Biaxial (-), a=1.534, b=1.538, g=1.543, bire=0.0090, 2V(Calc)=84, 2V(Meas)=58.

Calculated Properties of Canasite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.59 gm/cc
note: Specific Gravity of Canasite =2.60 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PECanasite = 3.73 barns/electron
U=PECanasite x relectron= 9.66 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 89.32 (Gamma Ray American Petroleum Institute Units)
Concentration of Canasite per GRapi unit = 1.12 (%)

Estimated Radioactivity from Canasite - barely detectable


Canasite Classification

Help on  Dana Class: Dana Class: (78)Unclassified silicates
  (78.05)possible phyllosilicates
  (78.05.04)Dana Group Canasite (Na,K)6Ca5Si12O30(OH,F)4 C 2/m 2/m Fluorcanasite! K3Na3Ca5Si12O30F4•H2O Cm m
Help on  Strunz Class: Strunz Class: 09.DG.80 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DG -Inosilicates with 3-periodic single and multiple chains
09.DG.80 Canasite (Na,K)6Ca5Si12O30(OH,F)4 C 2/m 2/m
09.DG.80 Fluorcanasite! K3Na3Ca5Si12O30F4•H2O Cm m

Other Canasite 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 Canasite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Ecole des Mines de Paris
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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Dana No: Strunz No: 09.DG.80





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