Filtry
Nb-Ta-Ti oxides fractionation in rare-metal granites: Krasno-Horni Slavkov ore district, Czech Republic
Nb-Ta-Ti-bearing oxide minerals (Nb-Ta-bearing rutile, columbite-group minerals) represent the most common Nb-Ta host in topaz-albite granites and related rocks from contains significant levels of...
Earth and related environmental sciences
- 2011 •
- Jimp •
- Odkaz
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Nb-Ta-Ti oxides in topaz granites of the Geyersberg granite stock (Erzgebirge Mts., Germany)
Nb-Ta-rich rutile, columbite group minerals and W-bearing ixiolite represent host for Nb, Ta and Ti in Li-mica granites of the Geyersberg granite stock. Columbite group minerals are represented by columbite-(Fe...
Mineralogy
- 2019 •
- Jimp •
- Odkaz
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Nb-Ta-Ti oxides in topaz granites of the Geyer granite stock (Erzgebirge Mts., Germany)
Nb-Ta-bearing oxide minerals (Nb-Ta rutile, columbite, W-ixiolite) represent the most common host in Li-mica granites from the Geyersberg granite stock in the Krušné Hory/Erzgebirge granite batholith. Columbite-(
Mineralogy
- 2018 •
- O •
- Odkaz
Rok uplatnění
O - Ostatní výsledky
Výsledek na webu
Niobium-tantalum oxide minerals in the Jezuitské Lesy granitic pegmatite, Bratislava Massif, Slovakia: Ta to Nb and Fe to Mn evolutionary trends in a narrow Be,Cs-richand Li,B-poor dike
of the Nb-Ta minerals from the quartz-microcline-muscovite zone show Ta, Fe-rich compositions with Ta# [Ta/(Ta + Nb)]= 0.52-0.70 (Ct I columbite-tantalite), 0.88-0.90 (TapA comp...
DB - Geologie a mineralogie
- 2011 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Minerals of columbite and microlite groups in granitic pegmatite near Liešťany: the first occurrence of rare-element Nb-Ta mineralization in the Strážovské vrchy Mts. (Slovak Republic)
internal zoning reflecting a relatively small compositional variations: Mn/(Mn+Fe) = 0.40-0.45 and Ta/(Ta+Nb) = 0.21-0.24. Secondary anhedral domains of Ta-rich columbite-(Fe) t...
Mineralogy
- 2020 •
- JSC •
- Odkaz
Rok uplatnění
JSC - Článek v periodiku v databázi SCOPUS
Výsledek na webu
Complex magmatic and subsolidus compositional trends of columbite-tantalite in the beryl-columbite Sejby granitic pegmatite, Czech Republic: role of crystal-structural constraints and associated minerals
a slight increase in Ta/Nb and Mn/Fe in the zones A and B followed by a reverse trend to elevated Nb and Fe in the zone C and, in particular, in the zone D. Complex subsolidus changes in Ta
Mineralogy
- 2018 •
- Jimp •
- Odkaz
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Columbite-tantalite from lepidolite pegmatite from Krasonice, Western Moravia
Columbite-tantalite from lepidolite pegmatite near Krasonice exhibits the rations Mn/Mn+Fe and Ta/Ta+Nb apparently different from those in other lepidolite pegmatites in the Moldanubicum......
DB - Geologie a mineralogie
- 1999 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Thermodynamic modelling of Mn-Nb and Mn-Ta systems
Thermodynamic assessment of Mn-Nb and Mn-Ta systems was relied on our new experimental phase equilibrium data and supported by the DFT calculation results....
Physical chemistry
- 2018 •
- O
Rok uplatnění
O - Ostatní výsledky
Nb-Ta-Ti oxides fractionation in rare-metal granites: Krásno-Horní Slavkov ore district, Czech Republic
Nb-Ta-rutile and columbite-group minerals represent the most common Nb-Ta host in topaz-albite granites and related rocks from the Krásno-Horní Slavkov ore district. Tungsten-bearing columbite-(Fe), W-bear...
DB - Geologie a mineralogie
- 2011 •
- Jx •
- Odkaz
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Zircon from extremely fractionated West-European Variscan peraluminous granites
are relatively enriched in P, Th, W, Nb, Ta, Y, Yb, Sc, Nb, Bi, Ca, Fe, Al, and F at Beauvoir (France) and Argemela (Portugal) were analyzed, using EMPA, for W, P, As, Nb, Ta, Si, Ti, Zr, Hf, Th,...
DB - Geologie a mineralogie
- 2010 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
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