Chelyabinskite Mineral Data (original) (raw)

General Chelyabinskite Information

Help on Chemical Formula: Chemical Formula:

(Ca,Mg)3Si(OH)6(SO4,CO3)2•9(H2O)

Help on Composition: Composition:

Molecular Weight = 574.77 gm

Calcium 15.69 % Ca 21.95 % CaO

Magnesium 3.17 % Mg 5.26 % MgO

Silicon 4.89 % Si 10.45 % SiO2

Hydrogen 4.21 % H 37.61 % H2O

Carbon 1.04 % C 3.83 % CO2

Sulfur 8.37 % S 20.89 % SO3

Oxygen 62.63 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Ca2.25Mg0.75Si(OH)6(SO4)1.5(CO3)0.5•9(H2O)

Help on IMA Status: IMA Status:

Not Approved IMA

Help on Locality: Locality:

Link to MinDat.org Location Data.

Search for Chelyabinskite Images

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Chelyabinskite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =0.9082:1:1.0726

Help on Cell Dimensions: Cell Dimensions:

a = 19.01, b = 20.93, c = 22.45, Z = 18; V = 8,932.39 Den(Calc)= 1.92

Help on Crystal System: Crystal System:

OrthorhombicSpace Group: Unk

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 9.52(1), 9.86(1), 3.79(0.8),

Physical Properties of Chelyabinskite

Help on Color: Color:

White.

Help on Density: Density:

1.908 - 1.912, Average = 1.91

Help on Diaphaneity: Diaphaneity:

Transparent to Translucent

Help on Hardness: Hardness:

3 - Calcite

Help on Luster: Luster:

Silky

Help on Streak: Streak:

white

Optical Properties of Chelyabinskite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= -0.026 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.021 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2566,KPDmeas= 0.2579,KC= 0.2513
Ncalc = 1.48

Help on Optical Data: Optical Data:

Biaxial (?), a=1.475, b=1.495, g=1.508, bire=0.0330, 2V(Calc)=76, 2V(Meas)=77.

Calculated Properties of Chelyabinskite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=2.00 gm/cc
note: Specific Gravity of Chelyabinskite =1.92 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.0067147226
Boson Index = 0.9932852774

Help on Photoelectric: Photoelectric:

PEChelyabinskite = 2.73 barns/electron
U=PEChelyabinskite x rElectron Density= 5.46 barns/cc.

Help on Radioactivity: Radioactivity:

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

Chelyabinskite Classification

Help on Dana Class: Dana Class:

78.00.00.00 (78)Unclassified Silicate Minerals

(78.00)Without Dana Classification Numbers

(78.00.00)Unclassified Silicate

78.00.00.00 Almbosite? Fe5Fe4V4Si3O27 Ortho ? Ortho

78.00.00.00 Chelyabinskite* (Ca,Mg)3Si(OH)6(SO4,CO3)2•9(H2O) Unk Ortho

78.00.00.00 Cryptophyllite K2Ca[Si4O10]•5H2O P 21/n 2/m

78.00.00.00 IMA2007-041T Na2[Ti4O2(OH)2(SiO4)3]•6H2O R 3m 3m

78.00.00.00 IMA2009-001 Ba5(Ca,REE,Y)22(Ti,Nb)18(SiO4)4[(PO4),(SiO4)]4(BO3)9O22[(OH),F]43(H2O)1.5 R 3 3

78.00.00.00 Iddingsite? MgO.Fe2O3.3SiO2•4(H2O) Ortho

78.00.00.00 Ivanyukite-Cu Cu[Ti4(OH)2O2(SiO4)3]•7H2O P 4 3m 4 3m

78.00.00.00 Ivanyukite-K K2[Ti4(OH)2O2(SiO4)3]•9H2O P 4 3m 4 3m

78.00.00.00 Ivanyukite-Na Na2[Ti4O2(OH)2(SiO4)3]•6H2O P 4 3m 4 3m

78.00.00.00 Plumbophyllite Pb2Si4O10•H2O P bcn 2/m 2/m 2/m

78.00.00.00 Sturtite? (Fe3)(Mn2,Ca,Mg)Si4O10(OH)3•10(H2O) None

Help on Strunz Class: Strunz Class:

07.DG.45 07 - SULFATES (SELENATES, TELLURATES)

07.D - Sulfates (selenates, etc.) with additional anions, with H2O

07.DG -With large and medium sized cations; with NO3, CO3, B(OH)4, SiO4 or IO3

07.DG.45 Chelyabinskite* (Ca,Mg)3Si(OH)6(SO4,CO3)2•9(H2O) Unk Ortho

Other Chelyabinskite Information

Help on References: References:

PHYS. PROP.(37th List of New Min.,Min. Mag.,1996) OPTIC PROP.(37th List of New Min.,Min. Mag.,19)

Help on See Also: See Also:

Links to other databases for Chelyabinskite :
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 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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

Chelyabinskite

(Ca,Mg)3Si(OH)6(SO4,CO3)2•9(H2O)
Dana No: 78.00.00.00 Strunz No: 07.DG.45
Locality:

Notes: