粤北地区锡矿成矿规律及找矿前景

粤北地区锡矿主要有石英脉带型锡矿、矽卡岩型锡矿、矽卡岩-破碎带复合型锡矿、脉状锡铅锌多金属矿、花岗岩风化壳型锡矿、云英岩型锡矿和砂锡矿等类型。根据区域成矿地质和物化探异常等特征,认为粤北地区石英脉型锡矿与矽卡岩-破碎带复合型锡矿具有良好的找矿前景,前者可作为今后该区域锡矿的主要找矿类型。根据区域成矿地质特征划分为5个找矿远景区,即锯板坑—瑶岭找矿远景区、杉木洞—禾尚田找矿远景区、大东山找矿远景区、岭脚找矿远景区、谢家山找矿远景区。

Analysis of tin mine metallogeny and prospecting potential in northern Guangdong Province

There are many types of tin mine in northern Guangdong Province such as the quartz vein type, the skarn type, the skarn fracture zone composite type, the tin-lead-zinc polymetallic ore vein type, the granitoid weathering crust type, the greisen type and alluvial tin type. According to the regional ore-forming geological characteristics, geophysical and geochemical anomaly characteristics, it is found out that the tin mine of quartz vein type and skarn-fracture zone composite type have great prospecting potential, with the former as the key tin prospecting type in northern Guangdong Province. Based on the regional ore-forming geological characteristics, five prospective areas are indentified, namely, Jubankeng-Yaoling area, Shanmudong-Heshangtian area, Dadongshan area, Lingjiao area and Xiejiashan area.