红土型金矿的形成（Formation of lateritic gold deposits）.docVIP

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红土型金矿的形成（Formation of lateritic gold deposits）.doc

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红土型金矿的形成（Formation of lateritic gold deposits） Formation of lateritic gold deposits Guangdong Ocean University Yong Yan Liao E-mail: rock6783@126.com 1 overview of lateritic gold deposits Lateritic gold deposit is an important gold deposit. Although the grade of this kind of ore is not high, it is large, easy to pick, easy to choose, low cost and high benefit (Yu Yu, 1994). Therefore, lateritic gold deposit is an important gold mine with important economic value. In a rock, the mineral content of the target does not meet the requirements of the current economic and technological conditions of mankind, this is not mineral deposits, but only ordinary rock. If the target mineral content is enriched by a certain mechanism to meet the requirements of the current economic and technological conditions, this kind of rock is the mineral deposit of this target mineral. Therefore, the process of mineralization is simply understood, that is, the process of gradual enrichment of target minerals. The role of red, is through the leaching effect of rainfall will be a large number of silicon, a soluble metal ion removal, improve the content of relatively insoluble iron, the process of red soil (Pickering, 1962; Hong Hanlie, 1997). A brief understanding of the role of laterite is the process of concentrating relatively insoluble matter by removing the silicon in the soil and the soluble metal ions (Jackson, 1965; Coleman, 1962). Gold is a relatively stable metal in clay to silicon process, it will not be with other active metal ions in a loss, and as iron enrichment (Evans, 1981). Red earth is a kind of clay colored by iron. Clay has the effect of adsorbing gold (Fan Hongrui and Li Zhaolin, 1991; Case, et, al., 1986). Therefore, when the gold content of the parent rock forming red earth is relatively high, the gold content in the laterite will meet the requirements of the current economic and technological conditions, and then the laterite gold deposits will be formed. Transformation