Natisite Mineral Data (original) (raw)

General Natisite Information

Help on Chemical Formula: Chemical Formula:

Na2(TiO)SiO4

Help on Composition: Composition:

Molecular Weight = 201.94 gm

Sodium 22.77 % Na 30.69 % Na2O

Titanium 23.71 % Ti 39.56 % TiO2

Silicon 13.91 % Si 29.75 % SiO2

Oxygen 39.61 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Na2TiSiO5

Help on Environment: Environment:

In natrolite-ussingite veins cutting alkalic rocks in a differentiated alkalic massif.

Help on IMA Status: IMA Status:

Approved IMA 1975

Help on Locality: Locality:

Mt. Karnasurt, Lovozero massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for the sodium, NAtrium, TItanium, and SIlicon in the composition.

Help on Name Pronunciation: Name Pronunciation:

Natisite Say NATISITE

Help on Synonym: Synonym:

ICSD 1533

PDF 29-1279

Natisite Image

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

Click Here for Larger Natisite Image Natisite Comments: Yellow-greenish crystals of natisite in matrix. Location: Mt. Karnasurt, Lovozero, Kola, Russia.Scale: Picture size 1 cm. © Diederik Visser

Natisite Crystallography

Help on Axial Ratios: Axial Ratios:

a:c = 1:0.78

Help on Cell Dimensions: Cell Dimensions:

a = 6.5, c = 5.07, Z = 2; V = 214.21 Den(Calc)= 3.13

Help on Crystal System: Crystal System:

Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: P 4/nmm

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 2.709(1), 5.05(0.8), 1.689(0.7),

Click Here for Large Natisite Structure Window Crystal Structure:

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| | Nyman H , O Keeffe M , Bovin J O , Acta Crystallographica, Section B , 34 (1978) p.905-906, Sodium titanium silicate, Na2TiSiO5, Locality: synthetic, Note: anisoU s from ICSD | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Natisite

Help on Cleavage: Cleavage:

{001} Perfect, {100} Good

Help on Color: Color:

Greenish gray, Yellow green.

Help on Density: Density:

3.15

Help on Hardness: Hardness:

3-4 - Calcite-Fluorite

Help on Luster: Luster:

Vitreous - Adamantine

Help on Streak: Streak:

white

Optical Properties of Natisite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= 0.173 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.168 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2294,KPDmeas= 0.2279,KC= 0.2757
Ncalc = 1.86 - 1.87

Help on Optical Data: Optical Data:

Uniaxial (-), e=1.68, w=1.756, bire=0.0760.

Calculated Properties of Natisite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=3.04 gm/cc
note: Specific Gravity of Natisite =3.13 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Help on Photoelectric: Photoelectric:

PENatisite = 4.79 barns/electron
U=PENatisite x rElectron Density= 14.56 barns/cc.

Help on Radioactivity: Radioactivity:

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

Natisite Classification

Help on Dana Class: Dana Class:

52.04.04.01 (52)Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O

(52.04)with cations in [6] and/or > [6] coordination

(52.04.04)Natisite - Yftisite group

52.04.04.01 Natisite Na2(TiO)SiO4 P 4/nmm 4/m 2/m 2/m

52.04.04.02 Paranatisite Na2[TiO(SiO4)] P mc21 mm2

52.04.04.03 Yftisite-(Y)? (Y,Dy,Er)4(Ti,Sn)O(SiO4)2(F,OH)6 C mcm 2/m 2/m 2/m

Help on Strunz Class: Strunz Class:

09.AG.40a 09 - SILICATES (Germanates)

09.A - Nesosilicates

09.AG -Nesosilicates with additional anions; cations in > [6] � [6] coordination

09.AG.40a Natisite Na2(TiO)SiO4 P 4/nmm 4/m 2/m 2/m

Other Natisite 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 Natisite :
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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Print or Cut-and-Paste your Natisite Specimen Label here :

Natisite

Na2(TiO)SiO4
Dana No: 52.04.04.01 Strunz No: 09.AG.40a
Locality:

Notes: