TITLE:
Some Notes on the Lugiin Gol, Mushgai Khudag and Bayan Khoshuu Alkaline Complexes, Southern Mongolia
AUTHORS:
Munkhtsengel Baatar, Gerel Ochir, Jindrich Kynicky, Shigeru Iizumi, Piero Comin-Chiaramonti
KEYWORDS:
Mongolia; Alkaline Complexes; Carbonatites; REE Deposits
JOURNAL NAME:
International Journal of Geosciences,
Vol.4 No.8,
October
28,
2013
ABSTRACT: Volcanic-plutonic alkaline complexes from Lugiin Gol, Mushgai Khudag and Bayan Khoshuu,
southern Mongolia (244, 139 and 131 Ma, respectively) occur within grabens in
E-W lineaments. They are represented by syenitic rock-types (silica
undersaturated to slightly silica oversaturated) potassic rocks and are
associated to stockworks of carbonatitic veins, dykes and so on. Geochemical
characteristics and isotope systematics point to a veined mantle source
particularly enriched in LILE and LREE. The carbonatitic veins show high
contents of Ba, Sr, Th and REE and are suitable as potential ore deposits.