Natalyite Mineral Data

General Natalyite Information

Chemical Formula:

Na(V+++,Cr+++)Si2O6

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

Empirical Formula:

NaV³⁺_0.75Cr_0.25Si₂O₆

Environment:

In Cr, V-rich diopside-quartz rocks that are part of a Precambrian metamorphic complex (Slyudyanka complex, Russia).

IMA Status:

Approved IMA 1985

Locality:

From the Pereval marble quarry, near Slyudyanka, Lake Baikal, Siberia, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for Nataliya Vasil'evna Frolova (1907-1960), geologist, Irkutsk University, Irkutsk, Russia.

Name Pronunciation:

Natalyite + Pronunciation

Search for Natalyite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Natalyite Crystallography

Axial Ratios:

a:b:c =1.0986:1:0.6043

Cell Dimensions:

a = 9.58, b = 8.72, c = 5.27, Z = 4; beta = 107.16° V = 420.65 Den(Calc)= 3.57

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/c

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

By Intensity(I/I_o): 2.52(1), 2.96(1), 2.87(0.8),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Secco L , Martignago F , Dal Negro A , Reznitskii L Z , Sklyarov E V , American Mineralogist , 87 (2002) p.709-714, Crystal chemistry of Cr-V-rich clinopyroxenes, Sample 4

Physical Properties of Natalyite

Cleavage:

{110} Distinct

Color:

Yellow green, Light green.

Density:

3.55

Diaphaneity:

Transparent

Hardness:

7 - Quartz

Luster:

Vitreous - Silky

Streak:

green

Optical Properties of Natalyite

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

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

Electron Density:

Bulk Density (Electron Density)=3.46 gm/cc
note: Specific Gravity of Natalyite =3.55 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Natalyite= 5.57 barns/electron
U=PE_Natalyite x rElectron Density= 19.27 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Natalyite is Not Radioactive

Natalyite Classification

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

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

References:

NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

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

Search for Natalyite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Natalyite :

A Bijoux Google Search for Natalyite
Adam's Minerals Google Search for Natalyite
Cape Minerals Google Search for Natalyite
Dakota Matrix Minerals Google Search for Natalyite
Excalibur Mineral Corp. Google Search for Natalyite
Exceptional Minerals Google Search for Natalyite
John Betts Fine Minerals Search for Natalyite
McDougall Minerals Google Search for Natalyite
Mineral News Website Link
Rock and Mineral Shows Google Search for Natalyite
Weinrich Minerals, Inc. Google Search for Natalyite

Ask about Natalyite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Natalyite Specimen Label here :

Natalyite

Na(V+++,Cr+++)Si2O6
Dana No: 65.01.03c.05 Strunz No: 09.DA.25
Locality:

Notes: