|Table of Contents|

Comparisons for the Characteristics of Chalcophile Elements of Typical Cu-Ni Sulfide Deposits in Western China(PDF)

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

Issue:
2010年第02期
Page:
137-143
Research Field:
基础地质与矿产地质
Publishing date:

Info

Title:
Comparisons for the Characteristics of Chalcophile Elements of Typical Cu-Ni Sulfide Deposits in Western China
Author(s):
WANG Jian-zhong1; 2;  QIAN Zhuang-zhi1;  DONG Fu-quan1;  ZHAO Yu-mei1
(1.School of Earth Sciences and Recources, Chang'an University, Xi'an 710054, Shaanxi, China; 2.No.8 Gold Geological Party, Chinese People's Armed Police Force, Urumqi 830057, Xinjiang, China)
Keywords:
chalcophile element;  PGE;  sulfide;  pre-segregation;  Cu-Ni deposit;  deficit;  Western China
PACS:
P618.41
DOI:
-
Abstract:
Compared of the characteristics of chalcophile elements among Kalatongke, Huangshandong, Jinchuan and Baimazhai Cu-Ni sulfide deposits, the results show that it is similarly left leaning primary mantle normalized plots and notable depletion of platinum group element(PGE)in all deposits; mass fraction of chalcophile elements is significantly different, and it is mainly Ni in Jinchuan Cu-Ni deposit which is highest in mass fraction of PGE and mainly Cu in Kalatongke deposit; their primary magmas derived from the mantle by high degree partial melt maybe fertile in PGE; the initial magma of deposit is no loss basaltic magma of PGE, and is the product of higher partial melting of mantle rocks; a small quantity of sulfide pre-segregation is the control factor for PGE deficit of ore-forming primary magma of Cu-Ni deposits in China and the ratio of mass faction of Cu and Pd is much larger than that in primitive mantle; the lower R is not the main reason for the different mass faction of primary magma chalcophile elements which is resulted from different quantity sulfide segregation; sulfur saturation in the early stage may be necessary for the formation of Ni deposit, the key of formation of Ni deposit may be continuously supplement of fresh melts; the phenomenon that a small quantity of sulfide pre-segregation does not include mineral rock deficit PGE, indicates that the potentiality of exploration in the depth of these deposits is great.

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Last Update: 2010-06-20