Geological Setting and Origin of Mo-W-Cu Deposits in the Honggor-Shamai District, Inner Mongolia, North China

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Abstract

Twenty-one Mo-W-Cu deposits and prospects have been discovered in the Honggor-Shamai district, Inner Mongolia, north China during past 5 years. This district is located in the central and western parts of the Chagan Obo-Aoyoute-Chaobulen tectono-magmatic belt, which is part of the Central Asian Orogenic Belt. The Mo-W-Cu deposits in the district are associated with Mesozoic granitoid intrusions and occur as veins, stockwork, and dissemination. The geological features of these newly discovered deposits are similar to porphyry-type deposits worldwide. Two mineralization events have been identified: Indosinian (235-224Ma) and Yanshanian (137-131Ma). It is proposed that these deposits and prospects in the Honggor-Shamai district were related to the post-collisional extension linked to the Indosinian orogeny during the Middle-Late Triassic period, but some of those deposits were overprinted by mineralization associated with the Cretaceous magmatic-hydrothermal (Yanshanian) event. © 2011 The Authors. Resource Geology © 2011 The Society of Resource Geology.

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Nie, F. J., & Jiang, S. H. (2011). Geological Setting and Origin of Mo-W-Cu Deposits in the Honggor-Shamai District, Inner Mongolia, North China. Resource Geology, 61(4), 344–355. https://doi.org/10.1111/j.1751-3928.2011.00171.x

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