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Tatarskite Mineral Data
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General Tatarskite Information
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 Chemical Formula: |
Ca6Mg2(SO4)2(CO3)2Cl4(OH)4•7(H2O) |
| Composition: |
Molecular Weight = 937.17 gm |
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Calcium 25.66 % Ca 35.90 % CaO |
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Magnesium 5.19 % Mg 8.60 % MgO |
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Hydrogen 1.94 % H 17.30 % H2O |
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Carbon 2.56 % C 9.39 % CO2 |
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Sulfur 6.84 % S 17.09 % SO3 |
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Chlorine 15.13 % Cl 15.13 % Cl |
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- %
Cl -3.41 % -O=Cl2 |
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Oxygen 42.68 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Ca6Mg2(SO4)2(CO3)2Cl4(OH)4•7(H2O) |
| Environment: |
Found in a drill core of marine evaporite deposits. |
| IMA Status: |
Approved IMA 1963 |
| Locality: |
Caspian Depression, Kazakhstan. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Vitalii Borisovich Tatarskii (1907-), Russian mineralogist, Leningrad University. |
| Name Pronunciation: |
Tatarskite + Pronunciation  |
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Tatarskite Crystallography
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| Crystal System: |
Orthorhombic Space Group: Unk |
| X Ray Diffraction: |
By Intensity(I/Io): 2.967(1), 2.625(0.9), 5.34(0.8), |
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Physical Properties of Tatarskite
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| Cleavage: |
{???} Fair, {???} Fair |
| Color: |
Colorless, Light yellow. |
| Density: |
2.341 |
| Diaphaneity: |
Transparent |
| Habit: |
Crystalline - Coarse - Occurs as well-formed coarse sized crystals. |
| Hardness: |
2.5 - Finger Nail |
| Luster: |
Vitreous - Pearly |
| Streak: |
white |
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Optical Properties of Tatarskite
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| Gladstone-Dale: |
CI meas= -0.11 (Poor) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.2767,KC= 0.2493
Ncalc = 1.58 |
| Optical Data: |
Biaxial (-), a=1.567, b=1.654, g=1.722, bire=0.1550, 2V(Calc)=78, 2V(Meas)=83. |
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Calculated Properties of Tatarskite
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| Electron Density: |
Bulk Density (Electron Density)=2.37 gm/cc
note: Specific Gravity of Tatarskite =2.34 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0065362456
Boson Index = 0.9934637544 |
| Photoelectric: |
PETatarskite = 4.67 barns/electron
U=PETatarskite x rElectron Density= 11.07 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tatarskite is Not Radioactive |
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Tatarskite Classification
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| Dana Class: |
32.04.02.01 (32)Compound Sulfates |
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(32.04)(hydrous) with poly-anionic formula |
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(32.04.02)Dana Group |
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32.04.02.01 Tatarskite Ca6Mg2(SO4)2(CO3)2Cl4(OH)4•7(H2O) Unk Ortho |
| Strunz Class: |
07.DG.25 07 - SULFATES (SELENATES, TELLURATES) |
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07.D - Sulfates (selenates, etc.) with additional anions, with H2O |
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07.DG -With large and medium sized cations; with NO3, CO3, B(OH)4, SiO4 or IO3 |
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07.DG.25 Tatarskite Ca6Mg2(SO4)2(CO3)2Cl4(OH)4•7(H2O) Unk Ortho |
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Other Tatarskite Information
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| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
| 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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Print or Cut-and-Paste your Tatarskite Specimen Label here :
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Tatarskite
Ca6Mg2(SO4)2(CO3)2Cl4(OH)4•7(H2O)
Dana No: 32.04.02.01 Strunz No: 07.DG.25
Locality:
Notes:
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