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 % H₂O

Carbon 8.62 % C 25.85 % C₂O₃

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(C₂O₄)Cl_1.9(OH)_0.2•2.2(H₂O)

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, AqtÃ¶be 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

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 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:

PE_{Novgorodovaite}= 5.17 barns/electron
U=PE_{Novgorodovaite} x rElectron 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
Locality:

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