Mineralogy Database

Trabzonite Mineral Data

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General Trabzonite Information

Help on Chemical  Formula: Chemical Formula: Ca4Si3O10•2(H2O)
Help on Composition: Composition: Molecular Weight = 440.59 gm
   Calcium   36.39 %  Ca   50.91 % CaO
   Silicon   19.12 %  Si   40.91 % SiO2
   Hydrogen   0.92 %  H     8.18 % H2O
   Oxygen    43.58 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca4Si3O10•2(H2O)
Help on Environment: Environment: Retrograde mineral.
Help on IMA Status: IMA Status: Approved IMA 1986
Help on Locality: Locality: Yarda Yaylasi, near Trabzon, Turkey. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after it's locality.
Help on Name Pronunciation: Name Pronunciation: Trabzonite + Pronunciation Say TRABZONITE

Trabzonite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.334:1:0.3352
Help on Cell Dimensions: Cell Dimensions: a = 6.895, b = 20.64, c = 6.92, Z = 4; beta = 98° V = 975.22 Den(Calc)= 3.00
Help on Crystal System: Crystal System: Monoclinic Space Group: P 21,P 21/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.062(1), 2.585(0.9), 3.442(0.6),

Physical Properties of Trabzonite

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless.
Help on Density: Density: 3.08
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Trabzonite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.062 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.037 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2118,KPDmeas= 0.2063,KC= 0.2198
Ncalc = 1.66 - 1.68
Help on Optical Data: Optical Data: Biaxial (+), a=1.632, b=1.634, g=1.64, bire=0.0080, 2V(Calc)=62, 2V(Meas)=55-60. Dispersion weak to distinct, r > v.

Calculated Properties of Trabzonite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.02 gm/cc
note: Specific Gravity of Trabzonite =3.00 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0096323829
Boson Index = 0.9903676171
Help on Photoelectric: Photoelectric: PETrabzonite = 5.17 barns/electron
U=PETrabzonite x rElectron Density= 15.64 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Trabzonite is Not Radioactive

Trabzonite Classification

Help on  Dana Class: Dana Class: (57)Sorosilicate Insular Si3O10 and Larger Noncyclic Groups
  (57.01)with [Si3O10] groups
  (57.01.03)Dana Group Trabzonite Ca4Si3O10•2(H2O) P 21,P 21/m Mono
Help on  Strunz Class: Strunz Class: 09.BJ.15 09 - SILICATES (Germanates)
  09.B - Sorosilicates
  09.BJ -Sorosilicates with Si3O10, Si4O11, etc
09.BJ.15 Trabzonite Ca4Si3O10•2(H2O) P 21,P 21/m Mono

Other Trabzonite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Bull.Miner.,Vol.107-111,1984-1988) OPTIC PROP.(Bull.Miner.,Vol.107-111,1984-1988)
Help on See Also: See Also: Links to other databases for Trabzonite :
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.BJ.15





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