Trabzonite Mineral Data

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General Trabzonite Information

Chemical Formula:

Ca4Si3O10•2(H2O)

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

Empirical Formula:

Ca₄Si₃O₁₀•2(H₂O)

Environment:

Retrograde mineral.

IMA Status:

Approved IMA 1986

Locality:

Yarda Yaylasi, near Trabzon, Turkey. Link to MinDat.org Location Data.

Name Origin:

Named after it's locality.

Name Pronunciation:

Trabzonite + Pronunciation

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Trabzonite Crystallography

Axial Ratios:

a:b:c =0.334:1:0.3352

Cell Dimensions:

a = 6.895, b = 20.64, c = 6.92, Z = 4; beta = 98° V = 975.22 Den(Calc)= 3.00

Crystal System:

MonoclinicSpace Group: P 2₁,P 2₁/m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.062(1), 2.585(0.9), 3.442(0.6),

Physical Properties of Trabzonite

Cleavage:

None

Color:

Colorless.

Density:

3.08

Diaphaneity:

Transparent

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Trabzonite

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

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

Electron Density:

Bulk Density (Electron Density)=3.02 gm/cc
note: Specific Gravity of Trabzonite =3.00 gm/cc.

Fermion Index:

Fermion Index = 0.0096323829
Boson Index = 0.9903676171

Photoelectric:

PE_Trabzonite= 5.17 barns/electron
U=PE_Trabzonite x rElectron Density= 15.64 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Trabzonite is Not Radioactive

Trabzonite Classification

Dana Class:

57.01.03.01 (57)Sorosilicate Insular Si3O10 and Larger Noncyclic Groups

(57.01)with [Si3O10] groups

(57.01.03)Dana Group

57.01.03.01 Trabzonite Ca4Si3O10•2(H2O) P 2₁,P 2₁/m Mono

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

References:

NAME( Dana8) PHYS. PROP.(Bull.Miner.,Vol.107-111,1984-1988) OPTIC PROP.(Bull.Miner.,Vol.107-111,1984-1988)

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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Print or Cut-and-Paste your Trabzonite Specimen Label here :

Trabzonite

Ca4Si3O10•2(H2O)
Dana No: 57.01.03.01 Strunz No: 09.BJ.15
Locality:

Notes: