- Tytuł:
- Hydrothermal metasomatism of a peralkaline granite pegmatite, Khaldzan Buragtag massif, Mongolian Altai; complex evolution of REE-Nb minerals
- Autorzy:
-
Bagiński, B.
Jokubauskas, P.
Domańska-Siuda, J.
Kartashov, P.
Macdonald, R. - Powiązania:
- https://bibliotekanauki.pl/articles/139319.pdf
- Data publikacji:
- 2016
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
Khaldzan-Buragtag Nb-REE-Zr deposit
hydrothermal alteration
composition of fluids
Chevkinite group minerals
REE minerals
złoże
przeobrażenia hydrotermalne
skład płynów
minerały - Opis:
- The low-temperature hydrothermal alteration of certain rare-metal minerals is recorded in a quartz-epidote metasomatite from the Tsakhirin Khuduk occurrence in the Khaldzan-Buragtag Nb-REE-Zr deposit, Mongolian Altai. A peralkaline granitic pegmatite was metasomatized by hydrothermal fluids released from associated intrusions, with the formation of, inter alia, chevkinite-(Ce), fergusonite-(Nd) and minerals of the epidote group. The textural pattern indicates recrystallization and coarsening of these phases. Later, low-temperature alteration byfluids resulted in the chevkinite-(Ce) being replaced by complex titanite-TiO2-cerite-(Ce)-hingganite-hydroxylbastnäsite-(Ce) assemblages. Calcite formed late-stage veins and patches. The hydrous fluids were poor in F and CO2 but had high Ca contents.
- Źródło:
-
Acta Geologica Polonica; 2016, 66, 3; 473-491
0001-5709 - Pojawia się w:
- Acta Geologica Polonica
- Dostawca treści:
- Biblioteka Nauki
Artykuł