Eitelite
A valid IMA mineral species - grandfathered
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About Eitelite
Wilhelm H. J. Eitel
Formula:
Na2Mg(CO3)2
Colour:
Colorless
Lustre:
Vitreous
Hardness:
3½
Specific Gravity:
2.737
Crystal System:
Trigonal
Name:
Named by C. Milton, J.M. Axelrod, and F.S. Grimaldi in 1955 in honor of Wilhelm Hermann Julius Eitel (6 May 1891, Frankfurt, Germany - 20 July 1979, Toledo, Ohio, USA), Director, Institute of Silicate Research, University of Toledo, Ohio, who first synthesized it.
This page provides mineralogical data about Eitelite.
Unique Identifiers
Mindat ID:
1360
Long-form identifier:
mindat:1:1:1360:0
GUID
(UUID V4):
(UUID V4):
b6a3c434-3126-4c1a-b683-b60182c14eca
IMA Classification of Eitelite
Approved, 'Grandfathered' (first described prior to 1959)
First published:
1955
Classification of Eitelite
5.AC.05
5 : CARBONATES (NITRATES)
A : Carbonates without additional anions, without H2O
C : Alkali and alkali-earth carbonates
5 : CARBONATES (NITRATES)
A : Carbonates without additional anions, without H2O
C : Alkali and alkali-earth carbonates
14.3.2.1
14 : ANHYDROUS NORMAL CARBONATES
3 : A2B(XO3)2
14 : ANHYDROUS NORMAL CARBONATES
3 : A2B(XO3)2
11.3.10
11 : Carbonates
3 : Carbonates of Mg
11 : Carbonates
3 : Carbonates of Mg
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Eit | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Eitelite
Vitreous
Transparency:
Transparent
Colour:
Colorless
Streak:
White
Hardness:
3½ on Mohs scale
Cleavage:
Very Good
Excellent on {0001}, also transverse on {0001}
Excellent on {0001}, also transverse on {0001}
Density:
2.737 g/cm3 (Measured) 2.732 g/cm3 (Calculated)
Optical Data of Eitelite
Type:
Uniaxial (-)
RI values:
nω = 1.605 nε = 1.450
Max Birefringence:
δ = 0.155
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Low
Chemistry of Eitelite
Mindat Formula:
Na2Mg(CO3)2
Elements listed:
Crystallography of Eitelite
Crystal System:
Trigonal
Class (H-M):
3 - Rhombohedral
Space Group:
R3
Cell Parameters:
a = 4.942(2) Å, c = 16.406(7) Å
Ratio:
a:c = 1 : 3.32
Unit Cell V:
347.01 ų (Calculated from Unit Cell)
Z:
3
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0000307 | Eitelite | Pabst A (1973) The crystallography and structure of eitelite, Na2Mg(CO3)2 American Mineralogist 58 211-217 |  | 1973 | 0 | 293 | |
| 0014765 | Eitelite | Knobloch D, Pertlik F, Zemann J (1980) Crystal structure refinements of buetschliite and eitelite: a contribution to the stereochemistry of trigonal carbonate minerals Neues Jahrbuch fur Mineralogie, Monatshefte 1980 230-236 | 1980 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.794 Å | (16) |
| 2.731 Å | (25) |
| 2.602 Å | (100) |
| 2.469 Å | (25) |
| 2.251 Å | (20) |
| 2.0710 Å | (18) |
| 1.8975 Å | (20) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 24 : Authigenic minerals in terrestrial sediments (see also #17) | |
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 35 : Ultra-alkali and agpaitic igneous rocks | |
| 36 : Carbonatites, kimberlites, and related igneous rocks |
Type Occurrence of Eitelite
General Appearance of Type Material:
Crystals, a few millimeters in diameter.
Place of Conservation of Type Material:
n.d.
Geological Setting of Type Material:
Authigenic mineral from dolomitic shale.
Associated Minerals at Type Locality:
Reference:
Milton, C., Axelrod, J.M., Grimaldi, F.S. (1955) New minerals, reedmergnerite (Na2O·B2O3·6SiO2) and eitelite (Na2O·MgO·2CO2) associated with leucosphenite, shortite, searlesite, and crocidolite in the Green River formation, Utah. American Mineralogist: 40: 326-327.
Other Language Names for Eitelite
Related Minerals - Strunz-mindat Grouping
| 5.AC.10 | Nyerereite | Na2Ca(CO3)2 |
| 5.AC.10 | Zemkorite | Na2Ca(CO3)2 |
| 5.AC.15 | Bütschliite | K2Ca(CO3)2 |
| 5.AC.20 | Fairchildite | K2Ca(CO3)2 |
| 5.AC.25 | Shortite | Na2Ca2(CO3)3 |
| 5.AC.30 | Burbankite | (Na,Ca)3(Sr,Ba,Ce)3(CO3)5 |
| 5.AC.30 | Calcioburbankite | Na3(Ca,REE,Sr)3(CO3)5 |
| 5.AC.30 | Khanneshite | (Na,Ca)3(Ba,Sr,Ce,Ca)3(CO3)5 |
| 5.AC.30 | Sanrománite | Na2CaPb3[CO3]5 |
| 5.AC.30 | Lishiite | (Ca2◻)Sr3(CO3)5 |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Eitelite
mindat.org URL:
https://www.mindat.org/min-1360.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Eitelite
Localities for Eitelite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Angola | |
| Castellano Calvo A et al. (2014) |
| Castellano Calvo A et al. (2014) |
Brazil | |
| Kaminsky et al. (2013) +1 other reference |
| Kaminsky et al. (2015) | |
Canada | |
| Chakhmouradian et al. (2015) |
| Sharygin et al. (2013) |
| Kamenetsky et al. (2013) | |
China | |
| Zhang et al. (2019, December) +1 other reference |
Mexico | |
| Mariano et al. (2014, June) |
Russia | |
| Golovin et al. (2023) |
| Chayka et al. (2021) |
| ... |
| Sharygin et al. (2013) | |
| Ivanyuk +1 other reference | |
| Mikhailova et al. (2016) | |
| Zaitsev et al. (2004) |
| Logvinova et al. (2019) |
| Sharygin et al. (2013) |
| Sharygin et al. (2021, October) |
| Sharygin (2016) +1 other reference |
South Africa | |
| Kamenetsky et al. (2014) |
| Giuliani et al. (2012) +1 other reference |
Spain | |
| Sanz-Montero et al. (2019) |
Sudan | |
| Sharygin et al. (2013) |
Tajikistan | |
| www.koeln.netsurf.de (1999) |
USA | |
| Tank (1972) +2 other references | |
| Milton et al. (1955) |
| Bullock (1981) | |
| gsa.confex.com (n.d.) | |
| Milton et al. (1960) | |
| U.S. Geological Survey Open-File Report ... +1 other reference | |
| U.S. GEOLOGICAL SURVEY Open-File Report ... | |
| Gunnar Färber |
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Mapco Shrine Hospital No. 1 well, Duchesne County, Utah, USA