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| Keywords | |
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Chuxiong Basin |
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Liuju copper deposit |
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ore-bearing rocks |
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sedimentary evolution |
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mineralization age |
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mineralization depth |
| Authors | |
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HU Yu-Zhao-1 |
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2 |
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HAN Run-Sheng-1 |
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2 |
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MIN Chao-Long-3 |
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WU Peng-1 |
| PubMed | |
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Article by Hu, Y. Z. 1 |
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Article by 2 |
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Article by Han, R. S. 1 |
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Article by 2 |
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Article by Min, C. L. 3 |
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Article by Wu, P. 1 |
Analysis on sedimentary evolution��mineralization epoch and depth of ore-bearing rocks in Liuju copper deposit��Chuxiong Basin
HU Yu-Zhao-1, 2, HAN Run-Sheng-1, 2, MIN Chao-Long-3, WU Peng-1
1. Faculty of Land Resources Engineering��Kunming University of Science and Technology��Kunming 650093��China; 2. Geological Survey Center for Non-ferrous Mineral Resources��Beijing 100012��China; 3. Yunnan Chuxiong Mine and Metallurgy Company Ltd��Chuxiong 675000��Yunnan��China
Liuju copper deposit is an important sandstone-type copper deposit in Chuxiong Basin of Yunnna Province. The orebody occurs chiefly in stratiform and stratiform-like structures. The sedimentary environment evolved from mendering river to oxidation-salinization lake in Late Cretaceous��and formed some favorable facies as point bar��crevasse fan and sublacustrine fan. The mineralization took place in diagenetic or buried stages. In early Yuanyongjing stage of Paleocene��while the burial depth of lower Matoushan Formation (main ore-bearing strata) as 928 m��the ore-bearing hydrothermal migrated to favorable facies��and this process may extend to late Yuanyongjing stage (56 Ma)��while the burial depth of main ore-bearing strata as 3 400 m. The reformation period may begun in Eocene��and formed some thin copper veins.