Namansilite Mineral Data (original) (raw)

General Namansilite Information

Help on Chemical Formula: Chemical Formula:

NaMn+++(Si2O6)

Help on Composition: Composition:

Molecular Weight = 230.10 gm

Sodium 9.99 % Na 13.47 % Na2O

Manganese 23.88 % Mn 34.31 % Mn2O3

Silicon 24.41 % Si 52.23 % SiO2

Oxygen 41.72 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

NaMn3+Si2O6

Help on Environment: Environment:

In low-grade metamorphosed and highly oxidized Mn, Na-rich sediments.

Help on IMA Status: IMA Status:

Approved IMA 1992

Help on Locality: Locality:

From the Irnimi deposit, Taikan Mountains, Khabarovsk Territory, Russia. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for the sodium, NAtrium; MANganese; and SILicon in the formula.

Help on Name Pronunciation: Name Pronunciation:

Namansilite + Pronunciation Say NAMANSILITE

Help on Synonym: Synonym:

IMA1989-026

Namansilite Image

Click Here for Larger Namansilite Image in a New Browser Window Images:

Namansilite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =1.1042:1:0.6217

Help on Cell Dimensions: Cell Dimensions:

a = 9.513, b = 8.615, c = 5.356, Z = 4; beta = 105.12° V = 423.75 Den(Calc)= 3.61

Help on Crystal System: Crystal System:

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

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 2.584(1), 2.501(0.9), 2.927(0.9),

Click Here for Large Namansilite Structure Window Crystal Structure:

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| | Ohashi H , Osawa T , Tsukimura K , Acta Crystallographica, Section C , 43 (1987) p.605-607, Refinement of the structure of manganese sodium dimetasilicate, Locality: synthetic, Note: pyroxene, Note: anisoB s from ICSD | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Namansilite

Help on Cleavage: Cleavage:

{???} Perfect

Help on Color: Color:

Brownish red, Violet red.

Help on Density: Density:

3.6

Help on Diaphaneity: Diaphaneity:

Transparent

Help on Hardness: Hardness:

6-7 - Orthoclase-Quartz

Help on Luster: Luster:

Vitreous - Pearly

Help on Streak: Streak:

brown red

Optical Properties of Namansilite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= 0.083 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.086 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2172,KPDmeas= 0.2178,KC= 0.2375
Ncalc = 1.85 - 1.86

Help on Optical Data: Optical Data:

Biaxial (-), a=1.746, b=1.769, g=1.837, bire=0.0910, 2V(Calc)=64, 2V(Meas)=15-20.

Calculated Properties of Namansilite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=3.50 gm/cc
note: Specific Gravity of Namansilite =3.60 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Help on Photoelectric: Photoelectric:

PENamansilite = 7.18 barns/electron
U=PENamansilite x rElectron Density= 25.16 barns/cc.

Help on Radioactivity: Radioactivity:

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

Namansilite Classification

Help on Dana Class: Dana Class:

65.01.03c.03 (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 Namansilite Information

Help on References: References:

NAME( AntBidBlaNic2) PHYS. PROP.(Am.Min.,Vol.78,p1316,1993) OPTIC PROP.(Am.Min.,Vol.78,p1316,1993)

Help on See Also: See Also:

Links to other databases for Namansilite :
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
15 - WWW-MINCRYST

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Ask about Namansilite here :
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Print or Cut-and-Paste your Namansilite Specimen Label here :

Namansilite

NaMn+++(Si2O6)
Dana No: 65.01.03c.03 Strunz No: 09.DA.25
Locality:

Notes: