Geochemical characteristics of the platinum-group elements in the Abulangdang ultramafic intrusion, Sichuan Province, China

被引：2
|
作者：
Ma Y. [1 ,2 ]
Tao Y. [1 ]
Zhong H. [1 ]
Zhu F. [1 ,2 ]
Zhou J. [1 ]
机构：
[1] State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences
[2] Graduate School of the Chinese Academy of Science
来源：
Chinese Journal of Geochemistry | 2009年 / 28卷 / 03期
基金：
中国国家自然科学基金;
关键词：
ELIP; Platinum-group elements (PGEs); Sulfide; Ultramafic rock;
D O I：
10.1007/s11631-009-0320-6
中图分类号：
学科分类号：
摘要：
The contents of the platinum-group elements (PGEs: Os, Ir, Ru, Rh, Pt, Pd) in the Abulangdang ultramafic intrusion have been determined using ICP-MS after nickel sulfide fire assay preconcentration. Different samples show significant differences in absolute PGE abundance. They display a pronounced negative incline in mantle-normalized patterns which are characterized by strong enrichment in IPGEs (Os, Ir, Ru) and depleting to slight enrichment in PPGEs (Rh, Pt, Pd). The characteristics of PGE distribution in the Abulangdang rocks are due to the combined action of sulfide and non-sulfide (spinel/chromite or alloy or micro-granular aggregation of metals). In comparison with the mafic-ultramafic rocks which host Ni-Cu-PGE deposits in the Emeishan Large Igneous Province (ELIP), it is assumed that the Abulangdang ultramafic intrusion may be the product of early-stage magma activity in the ELIP. © Science Press, Institute of Geochemistry, CAS and Springer-Verlag GmbH 2009.
引用
收藏
页码：320 / 327
页数：7
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