【摘要】 根据广东和广西 3个金矿床 (长坑 ,高龙和果提 )的资料认为 ,微细浸染型金矿 (卡林型金矿 )中存在一种亚类 ,叫做硅质岩型金矿。它以碳质硅质岩为含矿主岩 ,该岩石宏观上呈层状 ,主要由细小的石英和碳质物组成 ,金呈微细浸染状存在。该类矿床具有一般微细浸染型金矿床的主要特征 ,但不属于后生热液蚀变交代成因 ,而是主要通过热水沉积作用形成 ,同时可以混入一定量的生物沉积和冷水沉积的物质。由此认为 ,微细浸染型金矿有多种成因 ,包括后生热液成因 ,热水沉积成因以及其他成因 ,应该从“热水沉积同生成矿”的角度考虑硅质岩型金矿的找矿思路。建议对一些金矿区的“硅化岩”重新研究 ,查明其真正属性。中国南方是寻找硅质岩型金矿床极有远景的区域更多还原

【Abstract】 On the basis of the actual material and data from three gold deposits(Changkeng, Gaolong and Guoti) in Guangdong and Guangxi provinces of China, we suggested that within the sediment-hosted micro-disseminated-type(Carlin-type) gold deposits, there is a subtype which could be called silicalite-type gold deposit. Its main gold-bearing rocks are carbonaceous silicalites, which have stratiform occurrence and are composed of tiny quartz and carbonaceous matter principally. The gold exists in submicroscopic and disseminated form. This kind of gold deposits possesses the principal characteristics of general sediment-hosted micro-disseminated gold deposits, but does not belong to deuterogenic hydrothermal alteration-metasomatism origin. They were mainly formed by sedimentary exhalation, meanwhile, could be mixed with certain quantity of organo-sedimentary and normal marine sedimentary materials. It is proposed that sediment-hosted micro-disseminated gold deposits have varied geneses, including deuterogenic hydrothermal origin, sedimentary exhalation origin and other origins. The guideline for searching the silicalite-type gold deposits would be obtained from thinking about the idea of the “sedimentary exhalation-syngenetic metallogenesis”. It is recommended to re-study the so-called “silicified rocks” in certain sediment-hosted micro-disseminated gold mining areas in order to find out their true attribution. Finally, the southern China is one of the best prospecting areas to search silicalite-type gold deposits.更多还原