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Nováčekite

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Pedra Preta pit, Serra das Éguas, Brumado (Bom Jesus dos Meiras), Bahia, Brazil

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Note: the use of the name nováčekite is inconsistent in the literature. There are two differently hydrated species (Walenta, 1964), one with 12 water molecules (nováčekite = nováčekite-I), the other with 10 water molecules (nováčekite-II). A further, still less hydrated species is metanováčekite.

Both nováčekite-I and nováčekite-II are grandfathered species.
Their crystal structures have been solved by Locock et al. (2004); nováčekite-I is triclinic (P-1), with a 7.1594(5) Å, b 7.1610(5) Å, c 11.3146(7) Å, α 81.391(2)°, β 81.177(1)°, γ 88.884(1)°, while nováčekite-II is monoclinic (P21/n), with a 7.1328(11) Å, b 20.085(3) Å, c 7.1569(11) Å, β 90.585(3)°.

Nováčekite-I is very unstable under ambient conditions and quickly dehydrates to nováčekite-II, in part also to metanováčekite.
Most "nováčekite" specimens in collections seem to be either nováčekite-II or metanováčekite.

Classification of Nováčekite

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Other Information

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

References for Nováčekite

Reference List:

- +
Walenta, K. & Wimmenauer, W. (1961): Der Mineralbestand des Michaelganges im Weiler bei Lahr (Schwarzwald). Jh. Geol. Landesamt Baden-Württemberg, 4, 7-37.

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    • Localities for Nováčekite

    The 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.
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    (TL) indicates type locality. ? 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
     
    • Bahia
      • Brumado (Bom Jesus dos Meiras)
        • Serra das Éguas
    		Van King
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Karlovy Vary Region
        • Horní Slavkov (Schlaggenwald)
    		Sejkora, J. & Plasil, J. (2009): Mineralien aus dem Uranrevier Horni Slavkov. Lapis 34 (7-8), 63-67; 70 (in German).
      • Ústí Region
        • Krušné Hory Mts (Erzgebirge)
          • Klášterec nad Ohří
            • Medenec
    		- Hyrsl, J. & Korbel, P. (2009): Tschechien & Slowakei, Mineralien und Fundstellen. Page 60-75.
    Morocco
     
    • Souss-Massa-Draâ Region
      • Ouarzazate Province
        • Tazenakht
          • Bou Azer District (Bou Azzer District)
    		Favreau, G., Dietrich, J. E., Meisser, N., Brugger, J., Ait Haddouch, L. & Maacha, L. (2007): Bou Azzer, Morocco. Mineralogical Record 38, 345-407
            • Tamdrost
    		Favreau, G., Dietrich, J. E., Meisser, N., Brugger, J., Ait Haddouch, L. & Maacha, L. (2007): Bou Azzer, Morocco. Mineralogical Record 38, 345-407
    Russia
     
    • Northern Caucasus Region
      • Adygea (Adygeya) Republic
    		Pekov I.V. et al. (2010) Mineralogy of Belorechenskoe deposit (Northern Caucasus, Russia). Mineralogical Almanakh, 15(2).
    Switzerland
     
    • Wallis (Valais)
      • Anniviers Valley
        • Saint-Luc
    		Ansermet, S. (2012): Mines et minéraux du Valais - II. Anniviers et Tourtemagne. With contributions by N. Meisser, Ed. Porte-plumes (Ayer)
    USA
     
    • Texas
      • Oldham Co.
    		Page, L. R.; Stocking, H. E.; Smith, H. B. (1956) Contributions to the geology of uranium and thorium by the United States Geological Survey and Atomic Energy Commission for the United Nations International Conference on Peaceful Uses of Atomic Energy, Geneva, Switzerland, 1955. USGS Professional Paper 300 p 537
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    Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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