Rare-metal pegmatite deposits of the Kalba Region, Eastern Kazakhstan: Age, composition and petrogenetic implications

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

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number1017
Pages (from-to)1-15
Number of pages15
JournalMinerals
Volume10
Issue number11
DOIs
Publication statusPublished - Nov 2020

Keywords

  • Ar-Ar isotope age
  • Eastern Kazakhstan
  • Kalba granite batholith
  • Rare-metal pegmatites

Fingerprint

Dive into the research topics of 'Rare-metal pegmatite deposits of the Kalba Region, Eastern Kazakhstan: Age, composition and petrogenetic implications'. Together they form a unique fingerprint.

Cite this