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The Giant Xiarihamu Ni-Co Sulfide Deposit in the East Kunlun Orogenic Belt, Northern Tibet Plateau, China
Xie-Yan Song; Jun-Nian Yi; Lie-Meng Chen; Yu-Wei She; Chang-Zheng Liu; Xing-Yan Dang; Qi-An Yang; Shu-Kuan Wu
2016
发表期刊Economic Geology
卷号111期号:1页码:29-55
摘要

The Xiarihamu Ni-Co deposit, located in the East Kunlun orogenic belt, northern Tibet plateau, is the secondary largest Ni deposit in China and contains similar to 157 million metric tons (Mt) sulfide ores with average grades of 0.65 wt % Ni, 0.14 wt % Cu, and 0.013 wt % Co. The intrusion consists of gabbroic and ultramafic portions, the main orebody being hosted in the ultramafic portion. The zircons separated from the gabbronorite and websterite yield SHRIMP U-Pb ages of 405.5 +/- 2.7 and 406.1 +/- 2.7 Ma, indicating a genetic linkage with the Early Devonian regional magmatism (400-410 Ma). The main orebody includes two large ore pods comprising a pod of disseminated sulfides in the western portion grading into multiple ore sublayers to the east. The ore sublayers consist of net-textured and disseminated sulfides. The distribution and shape of the ore pods and sublayers of the orebody are conformable with the undulating roof and bottom of the ultramafic portion. The unusually high Ni/Cu ratios (similar to 4-18) and extremely low tenors of platinum-group elements (PGE; <4 ppb Ir, <85 ppb Pt, and <115 ppb Pd) of the disseminated sulfides indicate a genetic relationship with low degrees of partial melting of a pyroxenite mantle source. The slightly higher Ir and Ru tenors suggest that the disseminated sulfides in the western portion of the main orebody were segregated front less evolved magma under higher mass ratios of silicate melt/sulfide liquid than the sulfides of the middle and eastern portions.

学科领域矿床地球化学
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/352002/6176
专题矿床地球化学国家重点实验室_矿床地球化学国家重点实验室_期刊论文
推荐引用方式
GB/T 7714
Xie-Yan Song,Jun-Nian Yi,Lie-Meng Chen,et al. The Giant Xiarihamu Ni-Co Sulfide Deposit in the East Kunlun Orogenic Belt, Northern Tibet Plateau, China[J]. Economic Geology,2016,111(1):29-55.
APA Xie-Yan Song.,Jun-Nian Yi.,Lie-Meng Chen.,Yu-Wei She.,Chang-Zheng Liu.,...&Shu-Kuan Wu.(2016).The Giant Xiarihamu Ni-Co Sulfide Deposit in the East Kunlun Orogenic Belt, Northern Tibet Plateau, China.Economic Geology,111(1),29-55.
MLA Xie-Yan Song,et al."The Giant Xiarihamu Ni-Co Sulfide Deposit in the East Kunlun Orogenic Belt, Northern Tibet Plateau, China".Economic Geology 111.1(2016):29-55.
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