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Nyerereite

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Julius K. Nyerere
Formula:
Na2Ca(CO3)2
System:
Orthorhombic
Colour:
Colourless
Name:
Named by C. Milton in 1968 in honor of Julius Kambarage Nyerere (29 October 1964, Butiama, Tanganyika – 5 November 1985, London, United Kingdom), president of Tanganyika and then Tanzania 1964-1985. The original description contained only a name and composition. A later proposed name of natrofairchildite (in another paper that included data) was denied and nyerereite was given priority.
Isostructural with:

Classification of Nyerereite

Approved
Approval Year:
1963
5.AC.10

5 : CARBONATES (NITRATES)
A : Carbonates without additional anions, without H2O
C : Alkali and alkali-earth carbonates
14.3.4.1

14 : ANHYDROUS NORMAL CARBONATES
3 : A2B(XO3)2
11.1.10

11 : Carbonates
1 : Carbonates of the alkali metals and ammonium

Physical Properties of Nyerereite

Diaphaneity (Transparency):
Transparent
Colour:
Colourless
Density:
2.41 g/cm3 (Measured)    

Optical Data of Nyerereite

Type:
Biaxial (-)
RI values:
nα = 1.511 nβ = 1.533 nγ = 1.535
2V:
Measured: 29° , Calculated: 28°
Max Birefringence:
δ = 0.023
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
strong

Chemical Properties of Nyerereite

Formula:
Na2Ca(CO3)2
Elements listed in formula:

Crystallography of Nyerereite

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Cmcm
Cell Parameters:
a = 5.062(1) Å, b = 8.790(1) Å, c = 12.744(1) Å
Ratio:
a:b:c = 0.576 : 1 : 1.45
Unit Cell Volume:
V 567.04 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Platy crystals to 0.5 mm.
Twinning:
Always twinned.
Comment:
Incommensurately modulated twin structure (Bolotina et al., 2017): Cmcm(α00)00s with modulation vector q = 0.383a*, with above unit-cell parameters. Originally assumed to have Cmc21.

Type Occurrence of Nyerereite

Relationship of Nyerereite to other Species

5.AC.05EiteliteNa2Mg(CO3)2
5.AC.10ZemkoriteNa2Ca(CO3)2
5.AC.15BütschliiteK2Ca(CO3)2
5.AC.20FairchilditeK2Ca(CO3)2
5.AC.25ShortiteNa2Ca2(CO3)3
5.AC.30Burbankite(Na,Ca)3(Sr,Ba,Ce)3(CO3)5
5.AC.30CalcioburbankiteNa3(Ca,Ce,Sr,La)3(CO3)5
5.AC.30Khanneshite(Na,Ca)3(Ba,Sr,Ce,Ca)3(CO3)5
5.AC.30SanromániteNa2CaPb3(CO3)5
11.1.1ZabuyeliteLi2CO3
11.1.2NatriteNa2CO3
11.1.3NahcoliteNaHCO3
11.1.4WegscheideriteNa5H3(CO3)4
11.1.5ThermonatriteNa2CO3 · H2O
11.1.6TronaNa3(HCO3)(CO3) · 2H2O
11.1.7NatronNa2CO3 · 10H2O
11.1.8KaliciniteKHCO3
11.1.9ShortiteNa2Ca2(CO3)3
11.1.11NatrofairchilditeNa2Ca(CO3)2
11.1.12ZemkoriteNa2Ca(CO3)2
11.1.13PirssoniteNa2Ca(CO3)2 · 2H2O
11.1.14GaylussiteNa2Ca(CO3)2 · 5H2O
11.1.15BaylissiteK2Mg(CO3)2 · 4H2O
11.1.16FairchilditeK2Ca(CO3)2
11.1.17BütschliiteK2Ca(CO3)2
11.1.18Teschemacherite(NH4)HCO3

Other Names for Nyerereite

Name in Other Languages:

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.

Nyerereite in petrology

An essential component of (items highlighted in red)
Common component of (items highlighted in red)

References for Nyerereite

Reference List:
Dawson, J.B. (1962) Sodium carbonate lavas from Oldoinyo Lengai, Tanganyika. Nature: 195: 1075–1076.

Milton, C. (1968) The "natro-carbonatite lava" of Oldionyo Lengai, Tanzania. Geological Society of America, Abstracts Annual Meetings 1968: 202-202. (abstract)

Fleischer, M., Chao, G.Y., Kato, A. (1975) New mineral names. American Mineralogist: 60: 485-489.

McKie, D., Frankis, E.J. (1977) Nyerereite: A new volcanic carbonate mineral from Oldoinyo Lengai, Tanzania. Zeitschrift für Kristallographie: 145: 73-95.

Fleischer, M., Cabri, L.J. (1978) New mineral names. American Mineralogist: 63: 598-600.

Peterson, T.D. (1990) Petrology and genesis of natrocarbonatite. Contributions to Mineralogy and Petrology: 105: 143-155.

Shatskiy, A., Gavryushkin, P.N., Litasov, K.D., Koroleva, O.N., Kupriyanov, I.N., Borzdov, Y.M., Sharygin, I.S., Funakoshi, K., Palyanov, Y.N., Ohtani, E. (2015) Na-Ca carbonates synthesized under upper-mantle conditions: Raman spectroscopic and X-ray diffraction studies. European Journal of Mineralogy: 27: 175-184.

N. B. Bolotina, P. N. Gavryushkin, A. V. Korsakov, S. V. Rashchenko, Y. V. Seryotkin, A. V. Golovin, B. N. Moine, A. N. Zaitsev and K. D. Litasov (2017): Incommensurately modulated twin structure of nyerereite Na1.64K0.36Ca(CO3)2. Acta Crystallogr. B73, 276-284.

Internet Links for Nyerereite

mindat.org URL:
https://www.mindat.org/min-2945.html
Please feel free to link to this page.

Localities for Nyerereite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Brazil
 
  • Mato Grosso
    • Juína
      • Sorriso river
Kaminsky, F. V., Ryabchikov, I. D., & Wirth, R. (2015). A primary natrocarbonatitic association in the Deep Earth. Mineralogy and Petrology, 1-12.
Germany
 
  • Rhineland-Palatinate
    • Lahn valley
      • Bad Ems District
        • Braubach
Schnorrer-Köhler, G. & David, W. (1991): Die Blei- und Silberhütte Braubach und ihre Haldenminerale. Lapis, 16 (1), 38-49; 58 (in German).
Lapis, 16 (1), 38-53+58.
Italy
 
  • Basilicata
    • Potenza Province
Stoppa, F., Jones, A.P., Sharygin, V.V. (2009): Nyerereite from carbonatite rocks at Vulture volcano: implications for mantle metasomatism and petrogenesis of alkali carbonate melts. Central European Journal of Geosciences, 1, 131-151
        • Melfi
Stoppa, F., Jones, A.P., and Sharygin, V.V. (2009): Central European Journal of Geosciences 1(2), 131-151
Kenya
 
  • Nandi District
A. N. Zaitsev, T. Wenzel, T. Vennemann and G. Markl (2013): Tinderet volcano, Kenya: an altered natrocarbonatite locality? Mineralogical Magazine 77, 213-226.
Russia
 
  • Eastern-Siberian Region
    • Krasnoyarsk Territory (Krasnoyarsk Kray; Krasnoyarskii Krai)
      • Maimecha and Kotui Rivers Basin
Henderson, C. M. B., Kogarko, L. N., & Plant, D. A. (1999). Extreme closed system fractionation of volatile-rich, ultrabasic peralkaline melt inclusions and the occurrence of djerfisherite in the Kugda alkaline complex, Siberia. Mineralogical Magazine, 63(3), 433-438.
Henderson, C. M. B., Kogarko, L. N., & Plant, D. A. (1999). Extreme closed system fractionation of volatile-rich, ultrabasic peralkaline melt inclusions and the occurrence of djerfisherite in the Kugda alkaline complex, Siberia. Mineralogical Magazine, 63(3), 433-438.
    • Sakha Republic (Saha 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.
  • Northern Region
    • Murmanskaja Oblast'
      • Northern Karelia
www.koeln.netsurf.de/~w.steffens/vuori.htm
Tanzania
 
  • Arusha Region
Zaitsev A.N., Wenzel T., Markl G., Spratt J., Petrov S.V., Williams, C.T. (2010) Mineralogy and geochemistry of nephelinites and phonolites from the Sadiman volcano, northern Tanzania. Abstracts of XXVII International conference School «Geochemistry of Alkaline rocks». – Moscow-Koktebel’. pp. 240 pp.
McKie, D., Frankis, E.J. (1977) Nyerereite: A new volcanic carbonate mineral from Oldoinyo Lengai, Tanzania. Zeitschrift für Kristallographie: 145: 73-95.; Geol.Soc.Amer.,Progr. Annual. Meet.(1968) 202; Mineralogical Magazine 1997 61 : 779-789; Zaitsev, A. N., & Keller, J. (2006). Mineralogical and chemical transformation of Oldoinyo Lengai natrocarbonatites, Tanzania. Lithos, 91(1), 191-207.; Mattsson, H. B., & Reusser, E. (2010). Mineralogical and geochemical characterization of ashes from an early phase of the explosive September 2007 eruption of Oldoinyo Lengai (Tanzania). Journal of African Earth Sciences, 58(5), 752-763.; Victoria Sekisova, Victor Victorovich Sharygin, A. N. Zaitsev, Stanislav Strekopytov (2015) Liquid Immiscibility Геология и геофизика, 2015, т. 56, № 12, с. 2173—2197
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