GEOLOGICAL CHARACTERISTICS AND METALLOGENIC MODEL OF SUPER-LARGE PORPHYRY COPPER DEPOSIT IN AKTOGAI ORE FIELD, KAZAKHSTAN

CHEN Xuanhua; YANG Nong; CHEN Zhengle; HAN Shuqin; WANG Zhihong; SHI Wei; YE Baoying

Volume 16 Issue 4

Dec. 2010

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Article Navigation > Journal of Geomechanics > 2010 > 16(4): 325-339

CHEN Xuanhua, YANG Nong, CHEN Zhengle, et al., 2010. GEOLOGICAL CHARACTERISTICS AND METALLOGENIC MODEL OF SUPER-LARGE PORPHYRY COPPER DEPOSIT IN AKTOGAI ORE FIELD, KAZAKHSTAN. Journal of Geomechanics, 16 (4): 325-339.

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GEOLOGICAL CHARACTERISTICS AND METALLOGENIC MODEL OF SUPER-LARGE PORPHYRY COPPER DEPOSIT IN AKTOGAI ORE FIELD, KAZAKHSTAN

1.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijijng 100081, China
2.
China University of Geosciences, Beijing 100083, China

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Abstract

Abstract

The Aktogai ore field consists of a group of porphyry Cu-Mo-Au deposits, such as Aktogai, Aidarly, and Kyzylkia deposits, in the Balkhash Metallogenic Belt of the Central Asian Metallogenic Domain. They are formed in the Balkhash volcanic arc of the north-central margin of Kazakhstan Orocline due to the large left-leteral strike-slip movement of the Ural-Tianshan Fault System and lateral crust-growth in the Late Paleozoic. Among them, the Aktogai deposit is a superlarge porphyry Cu-Mo-Au deposit. All of them are porphyry deposits with typical zoning of wallrock alterations and mineral assemblages. The metallogenesis is mainly related to the silicification of the early-stage alkaline alteration and the redeposition in the acid alteration stage. The occurrence of ore-bodies is controlled by the E-W, ENE, and WNW trending faults. The SHRIMP zircon dating of granodiorite has given the Aktogai deposit a metallogenic age of 327.5 ± 1.9 Ma in the late period of the Early Carboniferous. The deposit model of the porphy deposits in the Aktogai ore field is concluded as "granodiorite" type in the hypabyssal porphyry copper system.
- Aktogai,
- porphyry copper deposit,
- geological characteristics,
- metallogenic model,
- developing future

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GEOLOGICAL CHARACTERISTICS AND METALLOGENIC MODEL OF SUPER-LARGE PORPHYRY COPPER DEPOSIT IN AKTOGAI ORE FIELD, KAZAKHSTAN

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GEOLOGICAL CHARACTERISTICS AND METALLOGENIC MODEL OF SUPER-LARGE PORPHYRY COPPER DEPOSIT IN AKTOGAI ORE FIELD, KAZAKHSTAN

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