Rare-Metal Pegmatite Deposits of the Kalba Region, Eastern Kazakhstan: Age, Composition and Petrogenetic Implications

The paper presents new geological, mineralogical, and isotope geochronological data for rare-metal pegmatites in the Kalba granitic batholith (Eastern Kazakhstan). Mineralization is especially abundant in the Central-Kalba ore district, where pegmatite bodies occur at the top of large granite pluton...

Full description

Saved in:

Bibliographic Details
Published in:	Minerals (Basel) Vol. 10; no. 11; p. 1017
Main Authors:	Sergey V. Khromykh, Tatiana A. Oitseva, Pavel D. Kotler, Boris A. D’yachkov, Sergey Z. Smirnov, Alexey V. Travin, Alexander G. Vladimirov, Ekaterina N. Sokolova, Oxana N. Kuzmina, Marina A. Mizernaya, Bakytgul’ B. Agaliyeva
Format:	Journal Article
Language:	English
Published:	MDPI AG 01-11-2020
Subjects:	Ar-Ar isotope age Eastern Kazakhstan Kalba granite batholith rare-metal pegmatites
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	The paper presents new geological, mineralogical, and isotope geochronological data for rare-metal pegmatites in the Kalba granitic batholith (Eastern Kazakhstan). Mineralization is especially abundant in the Central-Kalba ore district, where pegmatite bodies occur at the top of large granite plutons and at intersections of deep faults. The pegmatites contain several successive mineral assemblages from barren quartz-microcline and quartz-microcline-albite to Li-Cs-Ta-Nb-Be-Sn-bearing cleavelandite-lepidolite-spodumene. Ar-Ar muscovite and lepidolite ages bracket the metallogenic event between 291 and 286 Ma. The pegmatite mineral deposits formed synchronously with the emplacement of the phase 1 Kalba granites during the evolution of hydrous silicate rare-metal magmas that are produced by the differentiation of granite magma at large sources with possible inputs of F and rare metals with fluids.
ISSN:	2075-163X
DOI:	10.3390/min10111017