Mineralogy Database

Tatarskite Mineral Data

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General Tatarskite Information

Help on Chemical  Formula: Chemical Formula: Ca6Mg2(SO4)2(CO3)2Cl4(OH)4•7(H2O)
Help on Composition: Composition: Molecular Weight = 937.17 gm
   Calcium    25.66 %  Ca   35.90 % CaO
   Magnesium   5.19 %  Mg    8.60 % MgO
   Hydrogen    1.94 %  H    17.30 % H2O
   Carbon      2.56 %  C     9.39 % CO2
   Sulfur      6.84 %  S    17.09 % SO3
   Chlorine   15.13 %  Cl   15.13 % Cl
                -   %   Cl   -3.41 % -O=Cl2   
   Oxygen     42.68 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca6Mg2(SO4)2(CO3)2Cl4(OH)4•7(H2O)
Help on Environment: Environment: Found in a drill core of marine evaporite deposits.
Help on IMA Status: IMA Status: Approved IMA 1963
Help on Locality: Locality: Caspian Depression, Kazakhstan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Vitalii Borisovich Tatarskii (1907-), Russian mineralogist, Leningrad University.
Help on Name Pronunciation: Name Pronunciation: Tatarskite + Pronunciation Say TATARSKITE

Tatarskite Crystallography

Help on Crystal System: Crystal System: Orthorhombic Space Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.967(1), 2.625(0.9), 5.34(0.8),

Physical Properties of Tatarskite

Help on Cleavage: Cleavage: {???} Fair, {???} Fair
Help on Color: Color: Colorless, Light yellow.
Help on Density: Density: 2.341
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Crystalline - Coarse - Occurs as well-formed coarse sized crystals.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white

Optical Properties of Tatarskite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.11 (Poor) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.2767,KC= 0.2493
Ncalc = 1.58
Help on Optical Data: Optical Data: Biaxial (-), a=1.567, b=1.654, g=1.722, bire=0.1550, 2V(Calc)=78, 2V(Meas)=83.

Calculated Properties of Tatarskite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.37 gm/cc
note: Specific Gravity of Tatarskite =2.34 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0065362456
Boson Index = 0.9934637544
Help on Photoelectric: Photoelectric: PETatarskite = 4.67 barns/electron
U=PETatarskite x rElectron Density= 11.07 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tatarskite is Not Radioactive

Tatarskite Classification

Help on  Dana Class: Dana Class: (32)Compound Sulfates
  (32.04)(hydrous) with poly-anionic formula
  (32.04.02)Dana Group Tatarskite Ca6Mg2(SO4)2(CO3)2Cl4(OH)4•7(H2O) Unk Ortho
Help on  Strunz Class: Strunz Class: 07.DG.25 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.25 Tatarskite Ca6Mg2(SO4)2(CO3)2Cl4(OH)4•7(H2O) Unk Ortho

Other Tatarskite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Tatarskite :
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: 07.DG.25





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