Mineralogy Database

Fukalite Mineral Data

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General Fukalite Information

Help on Chemical  Formula: Chemical Formula: Ca4Si2O6(CO3)(OH,F)2
Help on Composition: Composition: Molecular Weight = 408.49 gm
   Calcium   39.24 %  Ca   54.91 % CaO
   Silicon   13.75 %  Si   29.42 % SiO2
   Hydrogen   0.25 %  H     2.21 % H2O
   Carbon     2.94 %  C    10.77 % CO2
   Oxygen    39.17 %  O
   Fluorine   4.65 %  F     4.65 % F
               -   %   F    -1.96 % -O=F2    
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca4Si2O6(CO3)(OH)F
Help on Environment: Environment: Alteration product of spurrite in spurrite-gehlenite skarns. Possible Order-Disorder structure tilleyite-type and tobermorite-type.
Help on IMA Status: IMA Status: Approved IMA 1977
Help on Locality: Locality: Bicchu, Fuka, Okayama Prefecture, Japan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Fukalite Say FUKALITE

Fukalite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.4497:1:6.1957
Help on Cell Dimensions: Cell Dimensions: a = 5.48, b = 3.78, c = 23.42, Z = 2; V = 485.13 Den(Calc)= 2.80
Help on Crystal System: Crystal System: Orthorhombic Space Group: Bm21b, Bmmb, B2mb
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.854(1), 3.084(0.9), 2.926(0.65),

Physical Properties of Fukalite

Help on Color: Color: White, Light brown.
Help on Density: Density: 2.77
Help on Diaphaneity: Diaphaneity: Translucent
Help on Habit: Habit: Crystalline - Fine - Occurs as well-formed fine sized crystals.
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Fukalite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.052 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.041 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2174,KPDmeas= 0.2197,KC= 0.2089
Ncalc = 1.58
Help on Optical Data: Optical Data: Biaxial (+/-), a=1.595, b=1.605, g=1.626, bire=0.0310, 2V(Calc)=70, 2V(Meas)=90.

Calculated Properties of Fukalite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.80 gm/cc
note: Specific Gravity of Fukalite =2.80 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.007463203
Boson Index = 0.992536797
Help on Photoelectric: Photoelectric: PEFukalite = 5.40 barns/electron
U=PEFukalite x rElectron Density= 15.10 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Fukalite is Not Radioactive

Fukalite Classification

Help on  Dana Class: Dana Class: (78)Unclassified silicates
  (78.04)possible inosilicates
  (78.04.03)Dana Group Fukalite Ca4Si2O6(CO3)(OH,F)2 Bm21b, Bmmb, B2mb Ortho
Help on  Strunz Class: Strunz Class: 09.DQ.05 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DQ -Modular Inosilicate-Sorosilicate Structures
09.DQ.05 Fukalite Ca4Si2O6(CO3)(OH,F)2 Bm21b, Bmmb, B2mb Ortho

Other Fukalite Information

Help on References: References: NAME( Dana8, AmMin v94:323) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Fukalite :
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: Strunz No: 09.DQ.05





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