Specific Features of the Porphyry-Related Gold Deposits in the Middle of the Dayaoshan Caledonian Orogenic Belt and Constraints of Tectonic Setting：An Example from the Dawangding Gold Deposit

详细信息   

• 责任者：Xu Zhixun (Central South Bureau ; China Metallurgical Geology Bureau ; Wuhan 430081 ; China) ; Liu Liangming
• 刊名：Geology and Prospecting
• 出版年：2012
• 卷期：48(2)
• 关键词：金矿 ; gold ores ; 广西 ; Guangxi
• 页码：p.305-312
• 图表：3 illus., 16 tables, 1 refs.
• 分类号：1001
• issnNo：ISSN0495-5331
• isbnNo：CN11-2043/P

摘要

The gold deposits discovered in the Dayaoshan Caledinian orogenic belt in Guangxi Province share the characteristics of orogenic gold deposits and were intimately associated with granitic porphyries. And the Dawangding gold deposit in the Wangdao orefield in middle of the Dayaoshan gold mineralization belt is a typical one of such deposits. In this work, we investigated the characteristics of ore-bearing fractures and enrichment and distribution of Au in the granite porphyry in the Dawangding deposit to illuminate the tectonic controls of the Caledinian orogenic deformation and the granite parphyry on the gold mineralization. The result shows that the granite porphyry is critical for gold mineralization, while the ore-bearing spaces are mainly caused by structural fracturing. It can be ascribed to the special tectonic setting of the Dayaoshan Caledinian orogenic belt.