Informace o publikaci
Three Types of Secondary Pretulite (ScPO4) from Dolni Bory Pegmatites, Czech Republic - Evidence for High Sc Mobility in Hydrothermal Environment
| Název česky | Tři typy sekundárního pretulitu (ScPO4) z pegmatitů v Dolních Borech, Česká republika - důkaz pro vysokou mobilitu skandia v hydrotermálním prostředí. |
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| Autoři | |
| Rok publikování | 2015 |
| Druh | Článek ve sborníku |
| Konference | MINERAL RESOURCES IN A SUSTAINABLE WORLD, VOLS 1-5 |
| Fakulta / Pracoviště MU | |
| Citace | |
| Klíčová slova | scandium; pretulite; hydrothermal alteration; granitic pegmatite |
| Popis | Three types of secondary pretulite (A, B and C) were identified from pegmatites in Dolní Bory, Czech Republic. All pretulite types formed by recrystallization of two different Sc-enriched precursor minerals: Sc,Y,U,P-rich zircon and complex W-Nb-Fe-Sc oxide. Formation of pretulite took place at approximately 350°C and 2 kbars. Pretulite A occurs as inclusions together with prevailing inclusions of xenotime-(Y) in recrystallized zircon. Pretulite B originated by recrystallization of the W-Nb-Fe-Sc oxide and its composition spans over almost whole ScPO4-ZrSiO4 solid solution. Pretulite C has been found away from the precursor minerals in association with pyrophyllite replacing andalusite. Composition of the fluids, which were poor in fluorine, allowed selective mobilization of Sc and its separation from HFSE. |