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Chronology, petrochemistry of fine grained granite and their implication to Mo-Cu mineralization in Xichong Mo deposit, Anhui Province, China
journal contribution
posted on 2023-05-18, 15:58 authored by Xie, YL, Li, LM, Guo, X, Sebastien MeffreSebastien Meffre, Chang, ZS, Zhang, J, Yao, Y, Wang, AGThe Xichong molybdenum deposit is located in Yuexi County of Anhui Province, China, which is in the east end of Qinling-Dabie metallogenic belt. The intrusive rock in Xichong Mo deposit, from early to late, are quartz monzonite, fine grained granite (130.8 ± 1.1Ma) and bimodel dikes (including quartz syenite porphyry and lamprophyre) which are all Yanshanian magmatic products occurring in inner continental environment. The ore styles include vein style, stockwork and disseminated style, showing porphyry type mineralization characteristics. The well developed alterations include biotite-magmatite alteration, K-feldspar alteration, quartz-muscovite (sericite) alteration, silification, quartz-epidote alteration, chlorite-carbonate alteration and argillic alteration. The Cu-Mo mineralization is closely related to quartz-sercite and quartz-epidote alteration, and minor Cu mineralization is related to argillic alteration. The distribution of Cu-Mo mineralization and Cu-Mo geochemical abnormity is spatially related to fine grained granite which has high Mo content, and shows NW trend. The whole rock geochemical results of fine grained granite show peraluminous-metaluminous, high K calc-alkalic granite characteristics with a mixed mantle-crust origin. The fine grained granite has a similar intrusive age with bimodel dikes and implies a regional extention environment.
Funding
Australian Research Council
AMIRA International Ltd
ARC C of E Industry Partner $ to be allocated
Anglo American Exploration Philippines Inc
AngloGold Ashanti Australia Limited
Australian National University
BHP Billiton Ltd
Barrick (Australia Pacific) PTY Limited
CSIRO Earth Science & Resource Engineering
Mineral Resources Tasmania
Minerals Council of Australia
Newcrest Mining Limited
Newmont Australia Ltd
Oz Minerals Australia Limited
Rio Tinto Exploration
St Barbara Limited
Teck Cominco Limited
University of Melbourne
University of Queensland
Zinifex Australia Ltd
History
Publication title
Acta Petrologica SinicaVolume
31Issue
7Pagination
1929-1942ISSN
1000-0569Department/School
School of Natural SciencesPublisher
Zhongguo Kexueyuan Dizhi yu Diqiu Wuli YanjiusuoPlace of publication
ChinaRepository Status
- Restricted