Eitelite
A valid IMA mineral species - grandfathered
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About Eitelite
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
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Please feel free to link to this page.
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References for Eitelite
Localities for Eitelite
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).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
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