广东丰顺十字路矿区矿体特征与找矿潜力

Characteristics of ore bodies and their prospecting potential in the Shizilu ore district of Fengshun County,Guangdong Province

广东丰顺十字路矿区位于莲花山断裂带锡铜多金属矿整装勘查区北部,早白垩世中细粒(黑云母)二长花岗岩与中-上侏罗统热水洞组火山岩的内外接触带上,区内目前共揭露矿体Ⅰ、Ⅱ、Ⅲ号3条成矿破碎带,对各成矿破碎带特征进行详细研究发现:金属矿物主要为闪锌矿、方铅矿、锡石、毒砂、黄铁矿、磁黄铁矿、黄铜矿等,脉石矿物主要为石英、绿泥石、云母等。根据矿床的成矿地质环境和矿体矿化特征,初步认为该矿床为岩浆期后热液裂隙充填交代硫化物型矿床,并对该区找矿潜力进行了分析,为区内下一步找矿工作提供参考。

The Shizilu ore district is located in the northern part of the integrated exploration area for tin-copper polymetallic ore in Lianhuashan fault zone,and the inner and outer contact zone between the Early Cretaceous meso-fine-grained(biotite)monzogranite and the mid-late Jurassic Reshuidong Formation volcanic rocks.At present,a total of 3 ore-forming fracture zones,No.Ⅰ,No.Ⅱ,No.Ⅲ,have been uncovered in the study area.The detailed study on the characteristics of each ore-forming fracture zone shows that the metal minerals are mainly sphalerite,galena,cassiterite,arsenopyrite,pyrite,pyrrhotite,chalcopyrite,etc.The gangue minerals are mainly quartz,chlorite,mica,etc.According to the metallogenic geological environment and ore-body mineralization characteristics of the deposit,it is preliminarily considered that the deposit is a post-magmatic hydrothermal fissure filling metasomatic sulfide deposit,and the prospecting potential of the deposit is analyzed,which provides a reference for next prospecting of the study area.