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Nyerereite

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Formula:
Na2Ca(CO3)2
System:
Orthorhombic
Colour:
Colourless

Classification of Nyerereite

Approved
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
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Type Occurrence of Nyerereite

Year of Discovery:
1963

Physical Properties of Nyerereite

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

Crystallography of Nyerereite

Crystal System:
Orthorhombic
Class (H-M):
mm2 - Pyramidal
Space Group:
Cmc21
Cell Parameters:
a = 5.04Å, b = 8.8Å, c = 12.74Å
Ratio:
a:b:c = 0.573 : 1 : 1.448
Unit Cell Volume:
V 565.04 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Platy crystals to 0.5 mm.
Twinning:
Always twinned.

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
Essential elements:
All elements listed in formula:

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,REE,Sr)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
11.1.6TronaNa3H(CO3)2 · 2H2O
11.1.7NatronNa2CO3 · 10H2O
11.1.8KaliciniteKHCO3
11.1.9ShortiteNa2Ca2(CO3)3
11.1.11Natrofairchildite
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.

References for Nyerereite

Reference List:
American Mineralogist (1975): 60: 487-488.

Zeitschrift für Kristallographie (1977): 145: 73-95.

American Mineralogist (1978): 63: 600.

Internet Links for Nyerereite

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.
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).
Italy
 
  • Basilicata
    • Potenza Province
      • Melfi
        • Vulture Mount
Stoppa, F., Jones, A.P., and Sharygin, V.V. (2009): Central European Journal of Geosciences 1(2), 131-151
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
Kenya
 
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
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
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.
Geol.Soc.Amer.,Progr. Annual. Meet.(1968) 202; Mineralogical Magazine 1997 61 : 779-789
Mineral and/or Locality  
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