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Study of particles from the Kafang copper deposit in Gejiu city, Yunnan

Li Dewei, Cao Jianjin, Ke Hongling, Liu Chang and Wei Xiaojun
Study of particles from the Kafang copper deposit in Gejiu city, Yunnan
Geochemistry - Exploration, Environment, Analysis (November 2017) 17 (4): 367-377


Samples were collected from the mining area, limestone area, and prospective area proximal to the Kafang copper deposit. The particles were analysed by the transmission electron microscopy (TEM) and the soil samples in the mining area were analysed by the X-ray diffraction (XRD). In the mining area and prospective area, metallic elements in the particles are Cu, Pb, Zn, As, Hg, and Co. Particles collected in the limestone area contain few metallic elements that exist in the ore minerals. Based on analysis of these particles, the following conclusions are made: (1) sizes of the collected particles are 20 - 300 nm; (2) the composition of the soil samples and the particulate samples are significantly different because particles in the particulate samples reflect an origin from geogas; (3) geogas particles have different elemental contents because of different physicochemical properties of the elements and physicochemical environment that the geogas particles experienced; and (4) the Kafang stratiform copper deposit is a granite-related hydrothermal deposit. Metallic elements in geogas particles occur in the ore minerals and have similar compositions to those of geogas particles in the sampling sites. The geogas particles most likely originate from concealed deposits. Supplementary material: EDS spectra of particles and coordinates of sampling points in the mining area, limestone area, and prospecting area are available at:

ISSN: 1467-7873
EISSN: 2041-4943
Serial Title: Geochemistry - Exploration, Environment, Analysis
Serial Volume: 17
Serial Issue: 4
Title: Study of particles from the Kafang copper deposit in Gejiu city, Yunnan
Affiliation: Sun Yat-sen University, School of Earth Sciences and Engineering, China
Pages: 367-377
Published: 201711
Text Language: English
Publisher: Geological Society Publishing House, London, United Kingdom
References: 29
Accession Number: 2018-016866
Categories: General geochemistry
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 3 tables, geol. sketch map
N23°13'60" - N23°16'00", E103°07'60" - E103°12'00"
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 201804
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