Project information
Accessory minerals of Ti,Nb,Ta and W as indicators of geochemical evolutions in magmatic rocks and related and hydroth. systems of the Bohem. Ma.
- Project Identification
- IAA3046002
- Project Period
- 1/2000 - 1/2002
- Investor / Pogramme / Project type
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Academy of Sciences of the Czech Republic
- Grants of distinctly investigative character focused on the sphere of research pursued at present particularly in the ASCR
- MU Faculty or unit
- Faculty of Science
- Cooperating Organization
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Institute of Rock Structure and Mechanics of the ASCR, v. v. i.
- Responsible person RNDr. Vladimír Šrein, CSc.
Accesory minerals of Ti, Nb, Ta and W (rutile, columbite-tantalite, wolframite, titanite) have become valuable indicators of geochemical evolution in the terms Fe/Mn and Nb/Ta ratios particularly in magmatic rocks and in associated hydrotermal systems. The proposed project will be a contribution to understanding of compositional evolution, geochemical fractionation and enrichment of some economic elements (e.g., Nb, Ta, W) in the rocks such as leucocratic granites and associated roks transitional between magmatic and hydrothermal stage, and hydrothermal veins, located particularly in the regions of Saxothuringicum, Moldanubian Zone and Bohemicum. Accessory minerals will also be utilized as indicators of subsequent hydrothermal overprint of the magmatic stage in some minerals and, moreover, as indicators of fluid activity (e.g., F, 02) in the parent rock.
Publications
Total number of publications: 8
2004
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Akcesorické Nb-Ta-Ti minerály z pegmatitu v uranovém dole Drahonín, Strážecké moldanubikum
Acta Musei Moraviea, Sci. geol., year: 2004, volume: 89, edition: 1
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Komplexní Nb-Ta-Ti oxidy z pegmatitu ve Vepicích u Milevska, masiv Čertova břemene
Bulletin mineralogicko-petrologického oddělení Národního muzea v Praze, year: 2004, volume: 12, edition: 1
2003
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Beryl-columbitový pegmatit z Branné, Hrubý Jeseník.
Acta Musei Moraviae, Scientiae Geologicae, year: 2003, volume: 88, edition: 1/2
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Extreme variation and apparent reversal of Nb-Ta fractionation in columbite-group minerals from the Scheibengraben beryl-columbite pegmatite, Maršíkov, Czech Republic
European Journal of Mineralogy, year: 2003, volume: 15, edition: 5
2001
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Distinctive compositional trends in columbite-tantalite from two segments of the lepidolite pegmatite at Rožná, western Moravia, Czech Republic
Journal of the Czech Geological Society, year: 2001, volume: 46, edition: 3/4
2000
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Highly ordered, homogeneous ferrocolumbite from an anorogenic granitic pegmatite at Ivittuut (Ivigtut), SW Greenland.
Neues Jahrbuch fur Mineralogie, Monatshefte, year: 2000, volume: 2000, edition: 10
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Subsolidus behavior of niobian rutile from Vezna, Czech Republic: a model for exsolution in phases with Fe2+ >> Fe3+.
Journal of the Czech Geological Society, year: 2000, volume: 45, edition: 1/2
1999
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Pegmatit od Dobré Vody
Acta Musei Moraviae, Scientiae Geologicae, year: 1999, volume: 84, edition: 1-2