Tatarskite Mineral Data (original) (raw)
General Tatarskite Information
Chemical Formula:
Ca6Mg2(SO4)2(CO3)2Cl4(OH)4•7(H2O)
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
Oxygen 42.68 % O
______ ______
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
Crystal System:
OrthorhombicSpace Group: Unk
X Ray Diffraction:
By Intensity(I/Io): 2.967(1), 2.625(0.9), 5.34(0.8),
Physical Properties of Tatarskite
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
Optical Properties of Tatarskite
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.
Calculated Properties of Tatarskite
Electron Density:
Bulk Density (Electron Density)=2.37 gm/cc
note: Specific Gravity of Tatarskite =2.34 gm/cc.
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.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tatarskite is Not Radioactive
Tatarskite Classification
Dana Class:
32.04.02.01 (32)Compound Sulfates
(32.04)(hydrous) with poly-anionic formula
(32.04.02)Dana Group
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)
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
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 :
Tatarskite
Ca6Mg2(SO4)2(CO3)2Cl4(OH)4•7(H2O)
Dana No: 32.04.02.01 Strunz No: 07.DG.25
Locality:
Notes: