Biogeochemical characteristics of the Hetai goldfield, Guangdong Province, China

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• 作者：Li Miao ; Ruisong Xu ; Yueliang Ma ; Jinhong Xu ; Jie Wang ; Rui Cai ; Yu Chen
• 关键词：Hetai goldfield ; Biogeochemical characteristics ; Cell structures
• 刊名：Journal of Geochemical Exploration
• 出版年：2008
• 出版时间：January 2008
• 年：2008
• 卷：96
• 期：1
• 页码：43-52
• 全文大小：1721 K

文摘

In the Hetai goldfield, Guangdong Province, China, samples including rocks, soils and leaves of four plants (Pinus massoniana, Rhodomyrms tomenlosa, D. linearis var. dichotoma and Embelia laeta) collected from the gold mineralization zone and the background area were analyzed for Au, Ag, Cu, Pb, Zn, Hg, As and physiological parameters. The objective of this investigation is to study the geochemical and biogeochemical characteristics of studied plants, aiming at biogeochemical methods in Au exploration. The goldfield region shows geochemical and biogeochemical anomalies. Abundances of Au in rocks, soils, plants and the leaf pigments in the mineralized area are much higher than those in the surrounding region. The plants display unhealthy physiological and ecological characteristics in the Hetai goldfield area. The cell structures of the goldfield plants were anomalous and aberrant, and there were many nano-metal particles diffused in mitochondria and chloroplasts. Macro- and microscopic evidences of the vegetation in the goldfield areas are distinctly different from the background regions. The strongly anomalies in responses to Au are profound in further geochemical and botanic exploration studies.