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Trends of Research in Exploration of Magmatic Sulfide Deposits and Small Intrusions Metallogenic System(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2011年第01期
Page:
1-9
Research Field:
院士专稿
Publishing date:

Info

Title:
Trends of Research in Exploration of Magmatic Sulfide Deposits and Small Intrusions Metallogenic System
Author(s):
TANG Zhong-li1; QIAN Zhuang-zhi1; 2; JIANG Chang-yi1; YAN Hai-qing1; JIAO Jian-gang1; LIU Min-wu1; 2; XU Zhang-hua1; XU Gang1; WANG Ya-lei1
1. School of Earth Sciences and Resources, Chang'an University, Xi'an 710054, Shaanxi, China; 2. Key Laboratory of West MineralResources and Geological Engineering of Ministry of Education, Chang'an University, Xi'an 710054, Shaanxi, China
Keywords:
magmatic sulfide deposit;  large layered intrusion;  PGE deposit;  small intrusion metallogenic system;  Ni-Cu(PGE)deposit
PACS:
P611.1+1
DOI:
-
Abstract:
The trends of research in exploration of magmatic sulfide deposits can be seen from the Xi'an International Ni-Cu(PGE)Deposit Symposium 2009 and the achievements of exploration research over the past decade as following: the PGE deposits related to the large-layered intrusions still receive much attention; it is agreed that the Sudbury deposit is unique and worthy of little reference; small intrusion metallogenic system becomes the main stream of the research; the theory of magma plumbing mineralization receives much attention. Bushveld, which is a large-layered intrusion, is taken as an example with brief introduction for the Merensky ore bed, UG-2 ore bed and Platreef ore deposit in the north wing of the contact zone. As there is no large rock mass discovered in China, the exploration of potential PGE deposits hosted in small- and medium-scale layered rock mass should be paid much attention. Except the particular instance of Sudbury deposit, most of the Ni-Cu deposits with economic values discovered all over the world were hosted in the small intrusions as individual metallogenitic system. The system includes metallogenic background, adjacent to deep fault, primary magma, and the digenesis of pilot magma, the mineralization of secondary magma and the segregation in deep-stage chamber, the pulsing penetration- mineralization in terminal magma chamber, etc. The exploration result over the past decade suggests that the type of small intrusion deposit is still the main target of research and exploration in China in the future. The metallogenic mechanism of deep liquation and conduit system of Noril'sk-Talnakh and Voisey's Bay deposits is introduced, and adds the diversity of small intrusions mineralization. However, it is to be answered by the future research and practice whether the ore-host space is an open conduit system or an closed terminal magma chamber.

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Last Update: 2011-03-20