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| Mineralization type and ore genesis of Pulang copper-polymetallic deposit in Yunnan province |
| Received:August 12, 2016 Revised:February 15, 2017 |
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| DOI： |
| KeyWord:copper polymetallic deposit; mineralization type; ore genesis; Pulang |
| Author | Institution |
| yang ji qing |
昆明理工大学建筑工程学院 |
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| Abstract: |
| (1.Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming, Yunnan 650500; 2.Faculty of Civil Engineering and Mechanics, Yunnan Agriculural University, Kunming, Yunnan 650201)：The Pulang copper deposit is a superlarge copper polymetallic deposit in the southern segment of the Sanjiang metallogenic belt. After the expose work of orebody characteristics in the first mining area, the geological conditions has been exposed by the periphery prospecting work. The Pulang copper can be divided into first mining area, eastern segment of mining area, northern segment of mining area and northern segment of peripheral mining area. According to the comprative analysis of ore-body characteristics, mineralization characteristics and the wall-rock alteration of the four ore-sections. The results showed that: the ore-bodies which occurred in first mining area and the northern segment beong to the porphyry copper deposit, and mainly controlled by alteration. The porphyry-type orebody mainly hosted in potassic alteraion, silicification belt and sericite-quartz alteration and their superposition area, and the mineralization has positively correlated with strengh of alteration. The vein ore and the lead-zinc orebody which occurred in the eastern/northern segment of periphreal mining area belongs to hydrothermal vein-type ore. The vein orebody has mainly controlled by fault structure which hosted in the nearly east-westwad joint fissure.This paper suggested that the near-surface of first mining area, structure-intersection part and the deep-part of northern segment are important prospective area of locating the blind ore body, by the conclusion of prospecting criteria. |
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