Analysis of the Occurrence of Platinum-Palladium and Precipitation Mechanism by SEM and EPMA in the Ni-Cu Sulphide Deposits from Yangliupin, Sichuan Province, China

DAI Jie; XU Jin-sha; DU Gu; WANG Kun-yang

doi:10.15898/j.cnki.11-2131/td.2015.02.002

2015 Vol. 34, No. 2

Article Contents

Article navigation > Rock and Mineral Analysis > 2015 > 34(2): 161-168

Next Article Previous Article

DAI Jie, XU Jin-sha, DU Gu, WANG Kun-yang. Analysis of the Occurrence of Platinum-Palladium and Precipitation Mechanism by SEM and EPMA in the Ni-Cu Sulphide Deposits from Yangliupin, Sichuan Province, China[J]. Rock and Mineral Analysis, 2015, 34(2): 161-168. doi: 10.15898/j.cnki.11-2131/td.2015.02.002

Citation:

DAI Jie, XU Jin-sha, DU Gu, WANG Kun-yang. Analysis of the Occurrence of Platinum-Palladium and Precipitation Mechanism by SEM and EPMA in the Ni-Cu Sulphide Deposits from Yangliupin, Sichuan Province, China[J]. Rock and Mineral Analysis, 2015, 34(2): 161-168. doi: 10.15898/j.cnki.11-2131/td.2015.02.002

Analysis of the Occurrence of Platinum-Palladium and Precipitation Mechanism by SEM and EPMA in the Ni-Cu Sulphide Deposits from Yangliupin, Sichuan Province, China

1.
Chengdu University of Technology, Chengdu 610059, China
2.
Chengdu Geological Survey Center, China Geological Survey, Chengdu 610081, China
3.
Key Laboratory of Sedimentary Basin and Paleogeography & Lithofacies, Chengdu 610081, China

Received Date: 14 May 2014

Revised Date: 28 December 2014

Accepted Date: 08 January 2015

Publish Date: 25 February 2015

Abstract

Abstract

The occurrence of Pt and Pd in Cu-Ni suphide deposits from Yangliupin, Sichuan Province has been studied successfully by Electron Probe Microscope (EPMA) and Scanning Electron Microscope (SEM) with energy analysis function. The result showed that Pt existing in the form of sperrylite and native platinium, and Pd was either mainly in the form of individual minerals such as testibiopalladite and hexatestibiopanickelite, or in the form of hexastibiopalladinite, michenerite and merenskyite. Pd was also found as isomorphism form in the Vavrinite (Pd 5%), sperrylite (Pd 1%-5%) and melonite (Pd 10%) which was initially found in the deposit. The precipitation of Pt and Pd was closely related to base metal sulfide (BMS) and altered minerals such as serpentine and calcite. The process can be described as follows: in the first stage with high temperature (1200-900℃), Pt and Pd was precipitated and then included in BMS; in the second stage with high-moderate temperature (650-250℃), Pt and Pd was precipitated on the side or in the crack of BMS with fractional crystallization or hydrothermal function respectively; and in the last stage with the temperature of 500-300℃, Pt and Pd was precipitated in the alteration minerals or in the crack of BMS by reason of alteration. The analysis results provide the scientic basis for other Ni-Cu sulfide of the same type.
- Scanning Electron Microscope (SEM) /
- Electron Probe Microscope Analysis (EPMA) /
- Yangliuping Ni-Cu sulfide PGEs deposit /
- Pt-Pd elements /
- occurrence /
- precipitation mechanism /
- /

FullText(HTML)

References

[1]	doi: 10.1016/j.gsf.2011.05.005
[2]	doi: 10.3749/canmin.49.6.1397
[3]
[4]	http://www.cnki.com.cn/Article/CJFDTOTAL-XDDZ200702022.htm
[5]	http://www.cnki.com.cn/Article/CJFDTOTAL-KWYS200101003.htm
[6]	doi: 10.2113/gscanmin.42.2.469
[7]
[8]	doi: 10.1180/0026461056910236
[9]	doi: 10.1016/j.chemgeo.2008.04.005
[10]	http://www.cnki.com.cn/Article/CJFDTOTAL-KYDH200004042.htm
[11]	http://www.cnki.com.cn/Article/CJFDTOTAL-CDLG200403007.htm
[12]	罗辅勋, 朱廷国, 郭瑞. 四川丹巴地区铂矿评价预查地质报告[R]. 四川省地质调查研究所, 2001. Google Scholar Lu F X, Zhu Y G, Guo R. The Geological Report of Platinum Mineral Preinspection Assessment in Danba County, Sichuan[R]. Geological Survey and Research Institute of Sichuan Province, 2001. Google Scholar
[13]	doi: 10.1016/j.rgg.2010.08.011
[14]
[15]
[16]	Zientek M L, Oscarson R L. Textural Association of Platinum-group Elements from the J-M Reef, Stillwater Complex, Montana[R]. U. S. Geological Survey, 1987, Circle. 995. Google Scholar
[17]
[18]
[19]	doi: 10.1180/minmag
[20]	doi: 10.1007/s00126-008-0190-6
[21]	doi: 10.2113/econgeo.105.6.1071
[22]	doi: 10.1016/0016-7037(90)90292-S
[23]	doi: 10.1139/e17-031
[24]
[25]	doi: 10.1016/j.chemgeo.2007.08.004
[26]	http://www.cnki.com.cn/Article/CJFDTOTAL-DXQY200501005.htm
[27]	http://www.cnki.com.cn/Article/CJFDTOTAL-KYDH200301007.htm