Characteristics of Secondary Halos and Dispersion Patterns of Au in African Tropical Grassland Landscape
详细信息
- 责任者：Zuo Libo (Tianjin Center of Geological Survey ; China Geological Survey ; Tianjin 300170 ; China) ; Wang Mingqi
- 刊名：Geophysical and Geochemical Exploration
- 出版年：2013
- 卷期：37(4)
- 关键词：土壤地球化学测量 ; geochemical soil surveys ; 砂金矿床 ; gold placer ; 次生分散 ; secondary dispersion ; 分散模式 ; dispersion patterns ; 乍得 ; Chad
- 页码：p.573-579
- 图表：illus., 4 tables, 6 refs.
- 分类号：1500
- issnNo：ISSN1000-8918
- isbnNo：CN11-1906/P
摘要
The Pala area is the most important mining area for alluvial gold in Mayo Kebbi Region,Chad.Many companies tried to find rock gold in this area;nevertheless,they all failed to find any good ore bodies in spite of lots of trenching and drilling work.To illustrate the formation process and origin of gold anomalies,the authors conducted geochemical exploration of gold mines in Pala with the purpose of summing up the characteristics of secondary halos of Au in African tropical grassland landscape.Vertical soil profile measurement was also made to analyze the geochemical behavior of Au during pediplanation so as to explain the origin of gold anomalies.The results obtained by the authors are of directive significance for gold exploration work of China’s companies in Africa under the same landscape condition.
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