Eitelite Mineral Data

General Eitelite Information

Chemical Formula:

Na2Mg(CO3)2

Composition:

Molecular Weight = 190.30 gm

Sodium 24.16 % Na 32.57 % Na₂O

Magnesium 12.77 % Mg 21.18 % MgO

Carbon 12.62 % C 46.25 % CO₂

Oxygen 50.44 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Na₂Mg(CO₃)₂

Environment:

Authigenic mineral in dolomitic shale and bituminous marlstone.

IMA Status:

Valid Species (Pre-IMA) 1955

Locality:

drill core in the Kermit Poulson No. 1 well, Green River Formation, in Duchesne Co., Wyoming, USA. Link to MinDat.org Location Data.

Name Origin:

Named for Wilhelm Hermann Julius Eitel (1891-1979), Director of the Institute of Silicate Research, University of Toledo, Toledo, Ohio, USA, who synthesized the compound.

Name Pronunciation:

Eitelite

Synonym:

ICSD 100482

PDF 24-1227

Eitelite Image

Images:

Eitelite

Comments: Pale yellow crystalline eitelite.
Location: Mapco Shrine Hospital Well #1 drill core, Green River Formation, Duchesne County, Utah, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Eitelite Crystallography

Axial Ratios:

a:c = 1:3.31748

Cell Dimensions:

a = 4.9423, c = 16.396, Z = 3; V = 346.84 Den(Calc)= 2.73

Crystal System:

Trigonal - Rhombohedral H-M Symbol ( 3) Space Group: R 3

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

By Intensity(I/I_o): 2.602(1), 2.469(0.25), 2.731(0.25),

Physical Properties of Eitelite

Cleavage:

{0001} Distinct

Color:

Colorless, White.

Density:

2.737

Diaphaneity:

Transparent

Hardness:

3.5 - Copper Penny

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Eitelite

Gladstone-Dale:

CI meas= 0.045 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.042 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1933,KPDmeas= 0.1928,KC= 0.2018
Ncalc = 1.55

Optical Data:

Uniaxial (-), e=1.4502, w=1.6052, bire=0.1550.

Calculated Properties of Eitelite

Electron Density:

Bulk Density (Electron Density)=2.70 gm/cc
note: Specific Gravity of Eitelite =2.73 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Eitelite= 0.82 barns/electron
U=PE_Eitelite x rElectron Density= 2.21 barns/cc.

Radioactivity:

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

Eitelite Classification

Dana Class:

14.03.02.01 (14)Anhydrous Carbonates

(14.03)with Compound Formula A+2 B++ (CO3)2

(14.03.02)Dana Group

14.03.02.01 Eitelite Na2Mg(CO3)2 R 3 3

Strunz Class:

05.AC.05 05 - CARBONATES (NITRATES)

05.A - Carbonates without additional anions, without H2O

05.AC -Alkali and alkali-earth carbonates

05.AC.05 Eitelite Na2Mg(CO3)2 R 3 3

Other Eitelite Information

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Eitelite :
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 Eitelite Specimen Label here :

Eitelite

Na2Mg(CO3)2
Dana No: 14.03.02.01 Strunz No: 05.AC.05
Locality:

Notes:

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