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THE GEOLOGICAL-GEOCHEMICAL PROSPECTING MODEL OF THE ZIJINSHAN COPPER-GOLD DEPOSIT AND ITS APPLICATION |
Yu Xuedong, Shao Yue, Li Yinggui |
Institute of Geophysical and Geochemical Exploration, Ministry of Geology and Mineral Resources, Langfang 102849 |
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Abstract On the basis of achievements obtained in surface rock survey and borehole primary halo studies performed in the Zijinshan copper-gold ore district, the present paper has discussed in detail horizontal and vertical anomaly distribution characteristics of halo-forming elements in the ore deposit, determined main ore-forming elements and associated elements, calculated zonal sequence of elements, expounded zonation of anomalous elements and, based on super-orehalos, be low-ore halos and element zonation and using multiplictive ratios, formulated Criteria for evaluating denudation level of copper and gold ore zones. These data. combined with geological characteristics of the ore district and ore deposit. have led the authors to establish the geological-geochemical prospecting mo del of the Zijinsban ore district. In geocbemical exploration conducted on the outskirts of the roe district. economically valuable orebodies and new mineralization types (porphyry gold, copper and molybdenum ores) were discovered, thus laying a foundation for the development of the Zilinshan district into a large-sized copper deposit.
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Received: 23 January 1995
Published: 24 October 1995
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