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Eitelite

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About EiteliteHide

Wilhelm H. J. Eitel
Formula:
Na2Mg(CO3)2
Colour:
Colorless
Lustre:
Vitreous
Hardness:
Specific Gravity:
2.737
Crystal System:
Trigonal
Name:
Named by C. Milton, J.M. Axelrod, and F.S. Grimaldi in 1985 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.


Classification of EiteliteHide

Approved, 'Grandfathered' (first described prior to 1959)
First Published:
1955
5.AC.05

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
11.3.10

11 : Carbonates
3 : Carbonates of Mg

Physical Properties of EiteliteHide

Vitreous
Transparency:
Transparent
Colour:
Colorless
Hardness:
3½ on Mohs scale
Cleavage:
Very Good
Excellent on {0001}, also on {0001}
Density:
2.737 g/cm3 (Measured)    2.732 g/cm3 (Calculated)

Optical Data of EiteliteHide

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.
Surface Relief:
Low

Chemical Properties of EiteliteHide

Formula:
Na2Mg(CO3)2

Crystallography of EiteliteHide

Crystal System:
Trigonal
Cell Parameters:
a = 4.94 Å, c = 16.39 Å
Ratio:
a:c = 1 : 3.318
Unit Cell V:
346.39 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.794 (16)
2.731 (25)
2.602 (100)
2.469 (25)
2.251 (20)
2.0710 (18)
1.8975 (20)

Type Occurrence of EiteliteHide

Geological Setting of Type Material:
Authigenic mineral from dolomitic shale
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 EiteliteHide

German:Eitelit
Simplified Chinese:碳钠镁石
Spanish:Eitelita
Traditional Chinese:碳鈉鎂石

Relationship of Eitelite to other SpeciesHide

Group Members:
Zemkorite Na2Ca(CO3)2Hex.

Related Minerals - Nickel-Strunz GroupingHide

5.AC.10NyerereiteNa2Ca(CO3)2Orth. mmm (2/m 2/m 2/m) : Cmcm
5.AC.10ZemkoriteNa2Ca(CO3)2Hex.
5.AC.15BütschliiteK2Ca(CO3)2Trig. 3m (3 2/m) : R3m
5.AC.20FairchilditeK2Ca(CO3)2Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
5.AC.25ShortiteNa2Ca2(CO3)3Orth. mm2 : Amm2
5.AC.30Burbankite(Na,Ca)3(Sr,Ba,Ce)3(CO3)5Hex. 6mm : P63mc
5.AC.30CalcioburbankiteNa3(Ca,REE,Sr)3(CO3)5Hex. 6mm : P63mc
5.AC.30Khanneshite(Na,Ca)3(Ba,Sr,Ce,Ca)3(CO3)5Hex.
5.AC.30SanromániteNa2CaPb3[CO3]5Hex. 6mm : P63mc

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

11.3.1MagnesiteMgCO3Trig. 3m (3 2/m) : R3c
11.3.2BarringtoniteMgCO3 · 2H2OTric.
11.3.3NesquehoniteMgCO3 · 3H2OMon. 2/m : P21/m
11.3.4LansforditeMgCO3 · 5H2OMon. 2/m : P21/b
11.3.5PokrovskiteMg2(CO3)(OH)2Mon.
11.3.6ArtiniteMg2(CO3)(OH)2 · 3H2OMon.
11.3.7HydromagnesiteMg5(CO3)4(OH)2 · 4H2OMon.
11.3.8GiorgiositeMg5(CO3)4(OH)2 · 5-6H2O
11.3.9DypingiteMg5(CO3)4(OH)2 · 5H2OMon.
11.3.11Mcguinnessite(Mg,Cu)2(CO3)(OH)2

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for EiteliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Eitel, W., Skaliks, W. (1929) Uber einige Doppelcarbonate der Alkalien und Erdalkalien. Zeitschrift für anorganische und allgemeine Chemie: 183: 263-286.
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.
Pabst, A. (1973) The crystallography and structure of eitelite, Na2Mg(CO3)2. American Mineralogist: 58: 211-217.
Khomyakov, A.P., Sandomirskaya, S.M., Malinovskii, Y.A. (1980) Iron eitelite, Na2(Mg,Fe)(CO3)2 – a new mineral variety. Doklady Akademii Nauk SSSR: 255: 190–192.
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 für Mineralogie, Monatshefte: 1980: 230-236.
Golubkova, A., Merlini, M., Schmidt, M.W. (2015) Crystal structure, high-pressure, and high-temperature behavior of carbonates in the K2Mg(CO3)2—Na2Mg(CO3)2 join. American Mineralogist: 100: 2458-2467.

Internet Links for EiteliteHide

Localities for EiteliteHide

ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Brazil
 
  • Mato Grosso
    • Juína
Kaminsky, F.V., Wirth, R., Schreiber, A. (2013): Carbonatitic inclusions in deep mantle diamond from Juina, Brazil: new minerals in the carbonate-halide association. Can. Mineral. 51, 669-688.
Kaminsky, F. V., Ryabchikov, I. D., & Wirth, R. (2015). A primary natrocarbonatitic association in the Deep Earth. Mineralogy and Petrology, 1-12.
Canada
 
  • British Columbia
    • Omenica Mining Division
      • Williston Lake
Chakhmouradian, A. R., Reguir, E. P., Kressall, R. D., Crozier, J., Pisiak, L. K., Sidhu, R., & Yang, P. (2015). Carbonatite-hosted niobium deposit at Aley, northern British Columbia (Canada): Mineralogy, geochemistry and petrogenesis. Ore Geology Reviews, 64, 642-666.
  • Northwest Territories
    • Lac de Gras
Sharygin, I. S., Golovin, A. V., Korsakov, A. V., & Pokhilenko, N. P. (2013). Eitelite in sheared peridotite xenoliths from Udachnaya-East kimberlite pipe (Russia)–a new locality and host rock type. European Journal of Mineralogy, 25(5), 825-834.
  • Saskatchewan
[Zemkorite] Shang, Y. (2000). Mineralogy, lithostratigraphy and geochemistry of North Ingebright Lake, Saskatchewan, Canada. PhD thesis University of Manitoba.
India
 
  • Andhra Pradesh
    • Anantapur District
[Zemkorite] AmMin 87:1384-1389 (2002)
Russia
 
  • Murmanskaya Oblast'
www.koeln.netsurf.de/~w.steffens/khib.htm
Sharygin, I. S., Golovin, A. V., Korsakov, A. V., & Pokhilenko, N. P. (2013). Eitelite in sheared peridotite xenoliths from Udachnaya-East kimberlite pipe (Russia)–a new locality and host rock type. European Journal of Mineralogy, 25(5), 825-834.
Sharygin, I. S., Golovin, A. V., Korsakov, A. V., & Pokhilenko, N. P. (2013). Eitelite in sheared peridotite xenoliths from Udachnaya-East kimberlite pipe (Russia)–a new locality and host rock type. European Journal of Mineralogy, 25(5), 825-834.
Mikhailova, J. A., Kalashnikov, A. O., Sokharev, V. A., Pakhomovsky, Y. A., Konopleva, N. G., Yakovenchuk, V. N., ... & Ivanyuk, G. Y. (2016). 3D mineralogical mapping of the Kovdor phoscorite–carbonatite complex (Russia). Mineralium Deposita, 51(1), 131-149.
  • Sakha Republic (Yakutia)
    • Daldyn-Alakit kimberlite field
      • Daldyn
Sharygin, I. S., Golovin, A. V., Korsakov, A. V., & Pokhilenko, N. P. (2013). Eitelite in sheared peridotite xenoliths from Udachnaya-East kimberlite pipe (Russia)–a new locality and host rock type. European Journal of Mineralogy, 25(5), 825-834.
South Africa
 
  • Free State Province
    • Thabo Mofutsanyane District
      • Clocolan
Kamenetsky, V. S., Belousova, E. A., Giuliani, A., Kamenetsky, M. B., Goemann, K., & Griffin, W. L. (2014). Chemical abrasion of zircon and ilmenite megacrysts in the Monastery kimberlite: Implications for the composition of kimberlite melts. Chemical Geology, 383, 76-85.
  • Northern Cape Province
    • Francis Baard District
      • Kimberley
        • KEM JV Mine (Kimberley Ekapa Mining Joint Venture mine; Kimberley Underground mine)
Giuliani, A., Kamenetsky, V. S., Phillips, D., Kendrick, M. A., Wyatt, B. A., & Goemann, K. (2012). Nature of alkali-carbonate fluids in the sub-continental lithospheric mantle. Geology, 40(11), 967-970.
Sudan
 
  • South Darfur Wilayah (Janub Darfur Wilayah)
    • Meidob Hills
Sharygin, I. S., Golovin, A. V., Korsakov, A. V., & Pokhilenko, N. P. (2013). Eitelite in sheared peridotite xenoliths from Udachnaya-East kimberlite pipe (Russia)–a new locality and host rock type. European Journal of Mineralogy, 25(5), 825-834.
Tajikistan
 
  • Region of Republican Subordination
    • Tien Shan Mtn
      • Alai Range (Alayskiy)
http://www.koeln.netsurf.de/~w.steffens/dara.htm
USA (TL)
 
  • Utah
    • Duchesne Co.
Am Min 44:326-327
UGMS Bull 117 Minerals and Mineral Localities of Utah
http://gsa.confex.com/gsa/2002AM/finalprogram/abstract_45510.htm.
Am Min 45:188-199
Am Min 58:211-217; U.S. GEOLOGICAL SURVEY Open-File Report 96-0729
U.S. GEOLOGICAL SURVEY Open-File Report 96-0729
  • Wyoming
    • Sweetwater Co.
      • Green River Basin
Gunnar Färber
MILTON, C. (1977): Mineralogy of the Green River Formation. Mineralogical Record 8, 368-379.
Mineral and/or Locality  
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