辽西小盘岭金矿床地质特征及找矿方向  

Geological features and prospecting direction of Xiaopanling gold deposit, western Liaoning

作　　者：于永安[1] 刘兴国[1] 王贵春[1] 李淑芳[1] 

机构地区：[1]武警黄金第四支队,辽宁辽阳111000

出　　处：《黄金地质》2001年第2期15-19,共5页Gold Geology

摘　　要：小盘岭金矿是一个与次火山岩有关的隐爆角砾岩型金矿床。隐爆角砾岩筒产于太古宙混合花岗片麻岩中 ,受近EW向刘家沟断裂控制 ,在近EW向断裂与NW向次级断裂交汇部位 ,角砾岩岩筒最为发育 ,金矿体产于隐爆角砾岩筒内并严格受其控制。 1号主矿脉圈出 5条工业矿体 ,长一般 6 6～ 30 3m ,最大厚度 11 70m ,平均厚 2 2 7m ,平均品位 5 6 3× 10 - 6 。Xiaopanling gold deposit is a cryptoexplosion beccia type deposit related to subvolcanic rocks. The cryptoexplosion beccia pipes occur in Archeozoic migmatitic granite gneiss, which are controlled by the nearly EW Liujiagou fracture. Around the intersection of EW and NW subsidiary fractures, the beccia pipes develop most. Gold orebodies occur in the cryptoexplosion beccia pipes and are controlled strictly. The No 1 main lode has great industrial values and has been outlined 5 orebodies, the length is 66～303 m, the maximum depth is 11 7 m, the average depth is 2 27 m, and the average grade is 5 63×10 -6 . It has formed the Xiaopanling gold deposit alone.

关 键 词：金矿床 隐爆角砾岩 矿床地质 找矿方向 围岩蚀变 成因 

分 类 号：P618.51[天文地球—矿床学]