Mineralogy Database

Natalyite Mineral Data

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General Natalyite Information

Help on Chemical  Formula: Chemical Formula: Na(V+++,Cr+++)Si2O6
Help on Composition: Composition: Molecular Weight = 226.36 gm
   Sodium    10.16 %  Na   13.69 % Na2O
   Vanadium  16.88 %  V    24.83 % V2O3
   Chromium   5.74 %  Cr    8.39 % Cr2O3
   Silicon   24.81 %  Si   53.09 % SiO2
   Oxygen    42.41 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaV3+0.75Cr0.25Si2O6
Help on Environment: Environment: In Cr, V-rich diopside-quartz rocks that are part of a Precambrian metamorphic complex (Slyudyanka complex, Russia).
Help on IMA Status: IMA Status: Approved IMA 1985
Help on Locality: Locality: From the Pereval marble quarry, near Slyudyanka, Lake Baikal, Siberia, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Nataliya Vasil'evna Frolova (1907-1960), geologist, Irkutsk University, Irkutsk, Russia.
Help on Name Pronunciation: Name Pronunciation: Natalyite + Pronunciation Say NATALYITE

Natalyite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0986:1:0.6043
Help on Cell Dimensions: Cell Dimensions: a = 9.58, b = 8.72, c = 5.27, Z = 4; beta = 107.16° V = 420.65 Den(Calc)= 3.57
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.52(1), 2.96(1), 2.87(0.8),

Physical Properties of Natalyite

Help on Cleavage: Cleavage: {110} Distinct
Help on Color: Color: Yellow green, Light green.
Help on Density: Density: 3.55
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 7 - Quartz
Help on Luster: Luster: Vitreous - Silky
Help on Streak: Streak: green

Optical Properties of Natalyite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.076 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.081 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2115,KPDmeas= 0.2127,KC= 0.23
Ncalc = 1.82
Help on Optical Data: Optical Data: Biaxial (-), a=1.741, b=1.762, g=1.762, bire=0.0210, 2V(Calc)=0, 2V(Meas)=8-12.

Calculated Properties of Natalyite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.46 gm/cc
note: Specific Gravity of Natalyite =3.55 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PENatalyite = 5.57 barns/electron
U=PENatalyite x rElectron Density= 19.27 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Natalyite is Not Radioactive

Natalyite Classification

Help on  Dana Class: Dana Class: 65.01.03c.05 (65)Inosilicate Single-Width Unbranched Chains, W=1
  (65.01)with chains P=2
  (65.01.03c)C2/c clinopyroxenes (Na clinopyroxenes)
65.01.03c.01 Jadeite Na(Al,Fe)Si2O6 C 2/c 2/m
65.01.03c.02 Aegirine NaFeSi2O6 C 2/c 2/m
65.01.03c.03 Namansilite NaMn(Si2O6) C 2/c 2/m
65.01.03c.04 Kosmochlor NaCrSi2O6 C 2/c 2/m
65.01.03c.05 Natalyite Na(V,Cr)Si2O6 C 2/c 2/m
65.01.03c.06 Jervisite (Na,Ca,Fe)(Sc,Mg,Fe)Si2O6 C 2/c 2/m
Help on  Strunz Class: Strunz Class: 09.DA.25 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DA -Inosilicates with 2-periodic single chains, Si2O6; pyroxene family
09.DA.25 Aegirine NaFeSi2O6 C 2/c 2/m
09.DA.25 Jadeite Na(Al,Fe)Si2O6 C 2/c 2/m
09.DA.25 Kosmochlor NaCrSi2O6 C 2/c 2/m
09.DA.25 Jervisite (Na,Ca,Fe)(Sc,Mg,Fe)Si2O6 C 2/c 2/m
09.DA.25 Namansilite NaMn(Si2O6) C 2/c 2/m
09.DA.25 Natalyite Na(V,Cr)Si2O6 C 2/c 2/m

Other Natalyite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Natalyite :
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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Dana No: 65.01.03c.05 Strunz No: 09.DA.25





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