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Origin of the Jinbaoshan Pt‐Pd Deposit, Western Yunnan: Implications for the Relationship of Crustal Contamination and Mineralization
Author(s) -
LU Yiguan,
YANG Liqiang,
ZHAO Kai,
XIONG Yiqu,
LI Po,
DU Dayang,
YUAN Mingwei
Publication year - 2014
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.12371_14
Subject(s) - beijing , china , geology , mineralization (soil science) , mineral resource classification , geochemistry , chinese academy of sciences , mining engineering , geological survey , earth science , archaeology , geography , soil science , soil water , paleontology
Magmatic sulfide deposits in the Emeishan large igneous province, SW China, have variable chalcophile and siderophile metal contents and can be divided into PGE, Cu-Ni-PGE and Cu-Ni deposits. Jinbaoshan Pt-Pd deposit is the only large-scale PGE deposit in the Emeishan large igneous province, which has a huge regional prospecting potential, so a correct understanding of the mineralization and a new idea of prospecting is quite significant (Deng et al., 2011; Yang et al., 2014). The Jinbaoshan Pt-Pd deposit is located in the west side of Yangtze archicontinent and the east side of the Red River faults (Yang et al., 2010, 2011), inside the Ninglang-Midu mafic-ultramafic intrusion zone. The ore body is situated in wehrlites, presenting as a stratoid or lentoid body, and with ore grades ranging from 1 to 5 ppm Pt+Pd. The factors that control the formation of the PGE-rich ore body are a matter of debate. One of the major questions still posed with respect to Jinbaoshan Pt-Pd deposit is if crustal contamination is an essential ingredient in the process. This research tries to make clear of the relationship between mineralization and crustal contamination.