Discovery of Gold Deposit in the Silurian System in Shujiadian, Tongling Ore Cluster Region and Its Significance
详细信息
- 责任者：Duan Liuan (School of Earth and Space Sciences ; University of Science and Technology of China ; Hefei 230026 ; China) ; Yang Xiaoyong
- 刊名：Geotectonica et Metallogenia
- 出版年：2013
- 卷期：37(2)
- 关键词：金矿 ; gold ores ; 蚀变岩型矿床 ; altered rock type deposit ; 安徽 ; Anhui Province
- 页码：p.333-339
- 图表：illus., 1 table, 19 refs.
- 分类号：1001
- issnNo：ISSN1001-1552
- isbnNo：CN44-1595/P
摘要
Based on systematic investigation of the Silurian strata around Shujiadian in the Tongling ore cluster region,we found a new type of gold mineralization in the Yangchongli ore field. Gold is occurred in the formation of Silurian clastic rocks,underwent strong alteration controlled by regional magmatic and structural activities. Geological prospecting engineering has achieved good effects,and the maximum mineralized vein is more than 20 m thick.Six fracture-alteration zones have been identified at present,the results of chemical compositions show that oreforming element contents in samples from 13 tunnel engineering slots can be up to of 44. 36 g / t( Au),126 g / t( Ag),7. 68%( Cu),respectively. We estimate that the size of this gold deposit can reach medium size by further drilling engineering. According to statistics,the gold deposits in Anhui province are mainly paragenetic types or accompanying types,few of them are independent ore types. Gold ores in Shujiadian are mainly enriched in gold,accompanied with silver,copper,molybdenum and zinc. The newly discovered gold deposit in Silurian System in Anhui province,which is obviously controlled by the regional structures with characteristics of structural-altered rock type mineralization,is much different from the known types of gold ore deposits in the Tongling ore cluster region,presenting new sight in the polymetal ore prospecting in the middle and lower Yangtze metallogenic belt.
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