Novgorodovaite Mineral Data

Novgorodovaite Mineral Data

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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, Aqt?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 - PrismaticH-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

Diaphaniety:

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

Optical Data:

Biaxial (-), a=1.565, b=1.645, g=1.725, bire=0.1600

Calculated Properties of Novgorodovaite

Electron Density:

r_electron=2.44 gm/cc
note: r_{Novgorodovaite}=2.43 gm/cc.

Fermion Index

Fermion Index = 0.00151
Boson Index = 0.99849

Photoelectric:

PE_{Novgorodovaite}= 5.17 barns/electron
U=PE_{Novgorodovaite} x r_electron= 12.64 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Novgorodovaite is Not Radioactive

Novgorodovaite Classification

Dana Class:

50.1.10.1 (50)Salts of Organic Acids

(50.1)(Oxalates)

(50.1.10)Dana Group

50.1.10.1 Novgorodovaite ! Ca2(C2O4)Cl2·2(H2O) I2/m 2/m

Strunz Class:

IX/A.01-28 IX - Organic compunds

IX/A - Oxalates. Salts from organic acids. [C2O4]2- arranged after increasing cation size

IX/A.01 - Whewellite - Wheatleyite series

IX/A.01-05 Natroxalate! Na2C2O4 P 2₁/a 2/m

IX/A.01-10 Whewellite Ca(C2O4)·(H2O) P 2₁/n 2/m

IX/A.01-20 Weddellite Ca(C2O4)·2(H2O) I 4/m 4/m

IX/A.01-25 Caoxite! Ca(C2O4)·3(H2O) P1 1

IX/A.01-28 Novgorodovaite Ca2(C2O4)Cl2·2(H2O) I2/m 2/m

IX/A.01-30 Oxammite (NH4)2(C2O4)·(H2O) P 2₁2₁2 2 2 2

IX/A.01-40 Glushinskite Mg(C2O4)·2(H2O) C 2/c 2/m

IX/A.01-50 Humboldtine Fe(C2O4)·2(H2O) I2/a 2/m

IX/A.01-55 Lindbergite! Mn(C2O4)·2(H2O) C 2/c 2/m

IX/A.01-60 Minguzzite K3Fe(C2O4)3·3(H2O) P 2₁/c 2/m

IX/A.01-70 Zhemchuzhnikovite NaMg(Al,Fe)(C2O4)3·8(H2O) Unk Trig

IX/A.01-80 Stepanovite NaMgFe(C2O4)3·8-9(H2O) Unk Trig

IX/A.01-90 Moolooite Cu(C2O4)·n(H2O)(n<1) Unk Ortho

IX/A.01-100 Wheatleyite Na2Cu(C2O4)2·2(H2O) P1 1

IX/A.01-110 Coskrenite-(Ce)! (Ce,Nd,La)2(SO4)2(C2O4)·8(H2O) C 2/c 2/m

IX/A.01-120 Levinsonite-(Y)! (Y,Nd,La)Al(SO4)2(C2O4)·12(H2O) P 2/n 2/m

IX/A.01-130 Zugshunstite-(Ce)! (Ce,Nd,La)Al(SO4)2(C2O4)·8(H2O) C 2/c 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 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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Novgorodovaite

Ca2(C2O4)Cl2·2(H2O)
Dana No: 50.1.10.1 Strunz No: IX/A.01-28
Locality:

Notes: