Novgorodovaite Mineral Data
General Novgorodovaite Information
Chemical Formula:
Ca2(C2O4)Cl2•2(H2O)
Composition:
Molecular Weight = 278.57 gm
Calcium 28.77 % Ca 40.26 % CaO
Hydrogen 1.66 % H 14.87 % H2 O
Carbon 8.62 % C 25.85 % C2 O3
Chlorine 24.18 % Cl 24.18 % Cl
- %
Cl -5.46 % -O=Cl2
Oxygen 36.76 % O
______ ______
100.00 % 99.71 % = TOTAL OXIDE
Empirical Formula:
Ca2 (C2 O4 )Cl1.9 (OH)0.2 •2.2(H2 O)
Environment:
Marine evaporite deposits.
IMA Status:
Approved IMA 2000 (Dana # Added)
Locality:
Drill core intersection (850-900m) of evaporitic rocks at the Chelkar salt dome deposit, western Kazakhstan. Link to MinDat.org Location Data.
Name Origin:
Named for Margarita Ivanovna Novgorodova (1938-), director of the Fersman Mineralogical Museum, Moscow, Russia.
Synonym:
IMA2000-039
Novgorodovaite Image
Images:
Novgorodovaite
Comments: A small fragment of the oxalate mineral novgorodovaite.
Location: Chelkar salt dome, Aksai Valley, Aqtöbe Oblysy (Aktubinsk [Aktyubinsk; Aktubinskaya] Oblast'), Kazakhstan.
Scale: Grain size 0.8 mm.
© Thomas Witzke / Abraxas-Verlag
Novgorodovaite Crystallography
Axial Ratios:
a:b:c =0.9395:1:1.0082
Cell Dimensions:
a = 6.936, b = 7.382, c = 7.443, Z = 2; beta = 94.3° V = 380.02 Den(Calc)= 2.43
Crystal System:
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: I2/m
X Ray Diffraction:
By Intensity(I/Io ): 2.917(1)(112), 2.956(0.8)(211 ), 4.063(0.7)(111), 4.323(0.7)(111 ), 5.062(0.7)(110),
Physical Properties of Novgorodovaite
Cleavage:
{100} Good, {010} Good
Color:
Colorless.
Density:
2.38
Diaphaneity:
Transparent
Fracture:
Brittle - Generally displayed by glasses and most non-metallic minerals.
Habit:
Aggregates - Made of numerous individual crystals or clusters.
Hardness:
2.5 - Finger Nail
Luster:
Vitreous (Glassy)
Streak:
white
Optical Properties of Novgorodovaite
Gladstone-Dale:
CI meas = -0.281 (Poor) - where the CI = (1-KPDmeas /KC ) CI calc = -0.255 (Poor) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.2654,KPDmeas = 0.271,KC = 0.2115 Ncalc = 1.5 - 1.51
Optical Data:
Biaxial (-), a=1.565, b=1.645, g=1.725, bire=0.1600
Calculated Properties of Novgorodovaite
Electron Density:
Bulk Density (Electron Density)=2.44 gm/cc note: Specific Gravity of Novgorodovaite =2.43 gm/cc.
Fermion Index:
Fermion Index = 0.0015159457 Boson Index = 0.9984840543
Photoelectric:
PENovgorodovaite = 5.17 barns/electronU=PENovgorodovaite x r Electron Density= 12.64 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Novgorodovaite is Not Radioactive
Novgorodovaite Classification
Dana Class:
50.01.10.01 (50) Salts of Organic Acids
(50.01) (Oxalates)
(50.01.10) Dana Group
50.01.10.01 Novgorodovaite ! Ca2(C2O4)Cl2•2(H2O) I2/m 2/m
Strunz Class:
10.AB.80 10 - ORGANIC COMPOUNDS
10.A - Salts of Organic Acids
10.AB -Oxalates
10.AB.80 Novgorodovaite ! Ca2(C2O4)Cl2•2(H2O) I2/m 2/m
Other Novgorodovaite Information
References:
NAME( AmMin, vol 87, p 1511) PHYS. PROP.(AmMin, vol 87, p 1511) OPTIC PROP.(AmMin, vol 87, p 1511)
See Also:
Links to other databases for Novgorodovaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
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Novgorodovaite
Ca2(C2O4)Cl2•2(H2O)
Dana No: 50.01.10.01 Strunz No: 10.AB.80
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