CAS OpenIR  > 中科院上海原子核所2003年前
Study on the occurrence of platinum in Xinjie Cu-Ni sulfide deposits by a combination of SPM and NAA
Li, XL(李晓林); Zhu, JQ; Lu, RR; Gu, YM; Wu, XK; Chen, YH
1997
Conference Name5th International Conference on Nuclear Microprobe Technology and Applications (ICNMTA)
Source PublicationNUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Pages617
Conference DateNOV 11-15, 1996
Conference PlaceSANTA FE, NM
AbstractA combination of neutron-activation analysis (NAA) and scanning proton microprobe (SPM) was used to study the distribution of platinum-group elements (PGEs) in rocks and ores from Xinjie Cu-Ni deposit. The minimum detection limits of PGEs by NAA had been much improved by means of a nickel-sulfide fire-assay technique for pre-concentration of PGEs in the ore samples. A simple and effective method was developed for true element mapping in SPM experiments. A pair of moveable absorption filters was set up in the target chamber for high sensitivities of both major and trace elements. The bulk analysis results by NNA indicated that the PGE mineralization occurred at the base of Xinjie layered intrusion in clinopyroxenite rocks and the Cu-Ni sulfide minerals disseminated within the rocks had high abundance level of PGEs. However, the micro-PIXE analysis of the Cu-Ni sulfide mineral grains did not find PGEs above the MDL of 6-9 ppm for Rh, Ru and Pd, and 60 ppm for Pt. The search for platinum occurrence in sulfide minerals was followed by scanning analysis of SPM when some smaller platinum enriched grains were found in the sulfide minerals. The microscopic analysis results suggested that platinum occurred in the Cu-Ni sulfide matrix as independent arsenide mineral grains. The chemical formula of the arsenide sperrylite was PtAs2. The information of the platinum occurrence was helpful to future mineralogical research and mineral processing and beneficiation of the Cu-Ni deposit. (C) 1997 Elsevier Science B.V.
ISSN0168-583X
Indexed BySCI
Funding Project应物所课题组
Language英语
WOS IDWOS:A1997XZ01700104
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Document Type会议论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/9835
Collection中科院上海原子核所2003年前
Recommended Citation
GB/T 7714
Li, XL,Zhu, JQ,Lu, RR,et al. Study on the occurrence of platinum in Xinjie Cu-Ni sulfide deposits by a combination of SPM and NAA[C],1997:617.
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