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Genesis of the Jincheng Gold Deposit in Luoshan County, Henan Province, China
Author(s) -
LIU Hong,
LIU Ge,
KE Changhui
Publication year - 2017
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 - 10.1111/1755-6724.13246
Subject(s) - china , geography , archaeology
The Tongbai Dabie area has experienced multistage plate subduction collision activities, resulting in the development of a series of nearly EW-trending ductile shear zones with different levels, scales, and characteristics (Wu et al., 2012). These ductile shear zones have controlled the northern Tongbai Dabie Au-Ag-polymetallic ore belt. The Jincheng gold deposit in the Luoshan County of the Henan Province is located in the central section of the Tongbai Dabie area and the west of Dabie Mountains. It occurs in the east side of the Lingshan granitic mass. The orebodies occur as veins and lens. They are controlled by the ductile shear zone, and hosted by metamorphic rocks of the late Proterozoic Huwangang Formation. Ore bearing rocks are dominated by altered amphibolite, mica schist and interbedded thin layer marble. Based on field investigation and previous research data, this paper presents the regional geological background, the geological features including orebody characteristics, ore fabrics, hydrothermal alteration, and mineralization stages, with an aim to summarize the main ore controlling factors. Furthermore, the paper points out the genesis of the gold deposit on the basis of ore geological, fluid geological and ore geochemical data.