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About MetathénarditeHide

greyish (IMA-approved material); colourless (fresh)
Crystal System:
Originally reported by Lacroix (1905) as a hypothetical mineral from Mt. Pelée, Martinique, Lesser Antilles, French West Indies. Approved by IMA in 2016 on submitted material from Glavnaya Tenoritovaya fumarole, Tolbachik volcano, Kamchatka, Russia.
Dimorph of:
A name applied to a high-temperature, hexagonal polymorph of Na2SO4. Approved as a new mineral in 2016.

Classification of MetathénarditeHide

Approval Year:

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
A : Sulfates (selenates, etc.) without additional anions, without H2O
C : With medium-sized and large cations

Physical Properties of MetathénarditeHide

greyish (IMA-approved material); colourless (fresh)

Chemical Properties of MetathénarditeHide

IMA Formula:

Crystallography of MetathénarditeHide

Crystal System:
Class (H-M):
6/mmm (6/m 2/m 2/m) - Dihexagonal Dipyramidal
Space Group:
Cell Parameters:
a = 5.3467(9) Å, c = 7.088(2) Å
a:c = 1 : 1.326
Unit Cell V:
175.48 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
4.667 (27)
3.904 (89)
3.565 (33)
2.824 (94)
2.686 (100)
2.325 (12)
2.203 (10)
1.939 (35)

Type Occurrence of MetathénarditeHide

General Appearance of Type Material:
Place of Conservation of Type Material:
collections of the Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia (registration number 4771/1)
Geological Setting of Type Material:
Volcanic fumaroles

Synonyms of MetathénarditeHide

Related Minerals - Nickel-Strunz GroupingHide

7.AC.Aluminopyracmonite(NH4)3Al(SO4)3Trig. 3 : R3
7.AC.Acmonidesite(NH4,K,Pb)8NaFe2+4(SO4)5Cl8Orth. 2 2 2 : C2 2 21
7.AC.05VanthoffiteNa6Mg(SO4)4Mon. 2/m : P21/b
7.AC.08Pyracmonite(NH4)3Fe(SO4)3Trig. 3m : R3c
7.AC.10LangbeiniteK2Mg2(SO4)3Iso. 2 3 : P21 3
7.AC.10ManganolangbeiniteK2Mn2(SO4)3Iso. 2 3 : P21 3
7.AC.15YavapaiiteKFe(SO4)2Mon. 2/m : B2/m
7.AC.15EldfelliteNaFe3+(SO4)2Mon. 2/m : B2/m
7.AC.20Godovikovite(NH4)Al(SO4)2Trig. 3 2 : P3 2 1
7.AC.20Sabieite(NH4)Fe3+(SO4)2Trig. 3 2 : P3 2 1
7.AC.25ThénarditeNa2SO4Orth. mmm (2/m 2/m 2/m) : Fddd

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 MetathénarditeHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Lacroix (1905) Bulletin de la Société française de Minéralogie: 23: 65.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 407.
Pekov, I.V., Gurzhiy, V.V., Zubkova, N.V., Agakhanov, A.A., Belakovskiy, D.I., Vigasina, M.F. Sidorov, E.G. (2016): Metathénardite, IMA 2015-102. CNMNC Newsletter No. 30,April 2016, page 408; Mineralogical Magazine: 80: 407–413

Internet Links for MetathénarditeHide

Localities for MetathénarditeHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - 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.
  • French West Indies
    • Martinique
      • Saint-Pierre
Palache, Charles, Harry Berman & Clifford Frondel (1951), Dana's System of Mineralogy, 7th edition, Volume 2: 407.
  • Southern Region
    • Vestmannaeyjar archipelago (Westman islands)
      • Heimaey island
Mitolo, D., Garavelli, A., Pedersen, L., Balić-Žunić, T., Jakobsson, S.P., Vurro, F. (2008): Mineralogy of actually forming sublimates at Eldfell Volcano, Heimaey (Vestmannaeyjar archipelago), Iceland. Plinius, 34, 322.
Russia (TL)
  • Kamchatka Krai
    • Tolbachik volcano
      • Great Fissure eruption (Main Fracture)
        • Northern Breakthrough (North Breach)
          • Second scoria cone
Pekov, I.V., Zubkova, N.V., Zolotarev, A.A., Yapaskurt, V.O., Krivovichev, S.V., Belakovskiy, D.I., Lykova, I.S., Vigasina, M.F., Kasatkin, A.V., Sidorov, E.G., Pushcharovsky, D.Y. (2016) Dioskouriite, IMA 2015-106. CNMNC Newsletter No. 30, April 2016, page 409; Mineralogical Magazine: 80: 407–413.
Mineral and/or Locality  
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