Mineralogy Database

Svyatoslavite Mineral Data

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General Svyatoslavite Information

Help on Chemical  Formula: Chemical Formula: CaAl2Si2O8
Help on Composition: Composition: Molecular Weight = 278.21 gm
   Calcium   14.41 %  Ca   20.16 % CaO
   Aluminum  19.40 %  Al   36.65 % Al2O3
   Silicon   20.19 %  Si   43.19 % SiO2
   Oxygen    46.01 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaAl2Si2O8
Help on Environment: Environment: Found as a sublimate (700-900 eg C) in a burning coal dump.
Help on IMA Status: IMA Status: Approved IMA 1989
Help on Locality: Locality: Kopeysk, Chelyabinsk coal basin, southern Ural mountains, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Svyatoslav Nestorovich Ivanov (b1911), Russian geologist.
Help on Name Pronunciation: Name Pronunciation: Svyatoslavite + Pronunciation Say SVYATOSLAVITE

Svyatoslavite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9544:1:0.5599
Help on Cell Dimensions: Cell Dimensions: a = 8.228, b = 8.621, c = 4.827, Z = 2; beta = 90° V = 342.40 Den(Calc)= 2.70
Help on Crystal System: Crystal System: Monoclinic - Sphenoidal H-M Symbol (2) Space Group: P 21
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.22(1), 2.09(0.8), 4.16(0.8),

Physical Properties of Svyatoslavite

Help on Cleavage: Cleavage: {100} Indistinct
Help on Color: Color: Colorless.
Help on Density: Density: 2.695
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 6 - Orthoclase
Help on Luminescence: Luminescence: Fluorescent, Short UV=weal yellow.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Svyatoslavite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.017 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.015 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2112,KPDmeas= 0.2116,KC= 0.208
Ncalc = 1.56
Help on Optical Data: Optical Data: Biaxial (-), a=1.552, b=1.578, g=1.581, bire=0.0290, 2V(Calc)=36, 2V(Meas)=37.08.

Calculated Properties of Svyatoslavite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.68 gm/cc
note: Specific Gravity of Svyatoslavite =2.70 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0098442021
Boson Index = 0.9901557979
Help on Photoelectric: Photoelectric: PESvyatoslavite = 3.12 barns/electron
U=PESvyatoslavite x rElectron Density= 8.35 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Svyatoslavite is Not Radioactive

Svyatoslavite Classification

Help on  Dana Class: Dana Class: (76)Tectosilicate Al-Si Framework
  (76.01)with Al-Si frameworks
  (76.01.06)Banalsite group Banalsite BaNa2Al4Si4O16 Iba2 mm2 Stronalsite SrNa2Al4Si4O16 Iba2 mm2 Lisetite Na2CaAl4Si4O16 Pbc2 mm2 Svyatoslavite CaAl2Si2O8 P 21 2
Help on  Strunz Class: Strunz Class: 09.FA.45 09 - SILICATES (Germanates)
  09.F - Tektosilicates without Zeolitic H2O
  09.FA -Tektosilicates without additional non-tetrahedral anions, (Al,B):Si = 1:1
09.FA.45 Svyatoslavite CaAl2Si2O8 P 21 2
09.FA.45 Kumdykolite NaAlSi3O8 P 2nn or Pmnn Ortho

Other Svyatoslavite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.76,p300,1996) OPTIC PROP.(Am.Min.,Vol.76,p300,1996)
Help on See Also: See Also: Links to other databases for Svyatoslavite :
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 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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Dana No: Strunz No: 09.FA.45





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