Natrite Mineral Data

General Natrite Information

Chemical Formula:

Na2CO3

Composition:

Molecular Weight = 105.99 gm

Sodium 43.38 % Na 58.48 % Na₂O

Carbon 11.33 % C 41.52 % CO₂

Oxygen 45.29 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Na₂(CO₃)

Environment:

Na analog of zabuyelite.

IMA Status:

Approved IMA 1983

Locality:

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

Name Origin:

Named for the composition.

Name Pronunciation:

Natrite

Synonym:

ICSD 60311

PDF 37-451

Natrite Image

Images:

Natrite

Comments: White opaque massive natrite.
Location: Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Natrite Crystallography

Axial Ratios:

a:b:c =1.7002:1:1.154

Cell Dimensions:

a = 8.906, b = 5.238, c = 6.045, Z = 4; beta = 101° V = 276.82 Den(Calc)= 2.54

Crystal System:

Monoclinic Space Group: C 2 or Cm

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

By Intensity(I/I_o): 2.962(1), 2.366(0.7), 2.545(0.6),

Physical Properties of Natrite

Cleavage:

{001} Perfect, {100} Good, {110} Good

Color:

Colorless, Yellow orange, White, Pink.

Density:

2.54

Habit:

Massive - Uniformly indistinguishable crystals forming large masses.

Habit:

Pseudo Hexagonal - Crystals show a hexagonal outline.

Hardness:

3.5 - Copper Penny

Luster:

Vitreous - Dull

Streak:

white

Optical Properties of Natrite

Gladstone-Dale:

CI meas= 0.017 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.017 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1953,KPDmeas= 0.1953,KC= 0.1987
Ncalc = 1.5

Optical Data:

Biaxial (-), a=1.41, b=1.535, g=1.543, bire=0.1330, 2V(Calc)=26, 2V(Meas)=28.

Calculated Properties of Natrite

Electron Density:

Bulk Density (Electron Density)=2.49 gm/cc
note: Specific Gravity of Natrite =2.54 gm/cc.

Fermion Index:

Fermion Index = 0.0014639304
Boson Index = 0.9985360696

Photoelectric:

PE_Natrite= 0.82 barns/electron
U=PE_Natrite x rElectron Density= 2.04 barns/cc.

Radioactivity:

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

Natrite Classification

Dana Class:

14.01.06.01 (14)Anhydrous Carbonates

(14.01)with Simple Formula A+ CO3

(14.01.06)Natrite Group

14.01.06.01 Natrite Na2CO3 C 2 or Cm Mono

14.01.06.02 Zabuyelite Li2CO3 C 2/c 2/m

Strunz Class:

05.AA.10 05 - CARBONATES (NITRATES)

05.A - Carbonates without additional anions, without H2O

05.AA -Alkali Carbonates

05.AA.10 Gregoryite (Na2,K2,Ca)CO3 P 6₃mc 6mm

05.AA.10 Natrite Na2CO3 C 2 or Cm Mono

Other Natrite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Natrite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info

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

Natrite

Na2CO3
Dana No: 14.01.06.01 Strunz No: 05.AA.10
Locality:

Notes:

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