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Metallogenetic Characteristics of the Gold Deposits in the Katagreenstone Belts of China

SHEN Baofeng  LI Junjian  MAO Debao  ZHAI Anmin  CHAO Xiulan

（Tianjin Institute of Geology and Mineral Resoures, Tianjin 300170）

Abstract

The gold deposits in the katagreenstone belts of China are widely distributed in the North China Platform,especially in the middle-west margin of the North China Platform. In terms of the sources of the ore-forming material and metallogenic tectonic setting, with the consideration from combination of metallogeny and crustal evolution, those deposits, related to katagreenstone belts, may be divided into the later-sytectonic primary gold deposits and post-tectonic regenerated hydrothermal gold deposits, the latter are more distributed and possessed more prospecting potential. The greenstone, structures and granitoid rocks are control factores to the gold metallogenises of the katagreenstone belts. The mineralization often are multiple periods from Neoarchean-Paleoproterozoic to Hercynian,Yanshanian. In consequence of the development of the multiple mineralized  tectonic-magmaticactivities in East China, so that the two types of gold deposits can distributed in the different tectonic part of the gold metallogenic focus-area.

Key words: China; katagreenstone belst; gold deposits; late-syntectonic primary gold deposits; post-tectonic regenerated hyderthermal gold deposits

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