合龙寨铅锌矿床特征及勘查方向探讨  

A Discussion on Helongzhai Lead-zinc Ore Characteristics and Investigation Orientation

作　　者：岳海涛[1,2] 

机构地区：[1]中南大学冶金工程学院,湖南长沙410012 [2]豫联集团,河南郑州451200

出　　处：《中国煤炭地质》2009年第A01期15-16,59,共3页Coal Geology of China

摘　　要：云南省合龙寨铅锌矿区的主要赋矿层位为中元古界昆仑群大龙口组及美党组。该区岩浆活动频繁,自元古代晚期至新生代,其构造运动存在强度不等、类型不同的几期岩浆侵入,与成矿关系最为密切的是燕山早期Ⅱ亚期侵入岩—岔河岩体(ηγ52b)。合龙寨主体构造形态为向斜,其向斜核部及两翼地层被后期岩浆侵入体严重改造,而花岗岩体中发育的断裂构造控制了该矿区的矿体富集程度。据此认为该区矿体分布及组合是岩浆岩、地层和构造等因素综合作用的结果,属中温到中低温热液交代裂隙充填矿床。根据该区的主要成矿特点,提出了下一步的主要勘查方向。The main hosting horizons of the Helongzhai lead-zinc ore, Yunnan Province are in the Dalongkou Formation and Meidang Formation, Kunlun Group, Middle Proterozoic. Magmatic activities in the area are frequent, from Late Proterozoie to Cenozoic, have some phases of magmatie intrusion with different intensity and type, while the Chahe rock mass （ηγ^2b5） of episode Ⅱ, early Yanshan cycle had closest relation with ore-forming. The main structure of Helongzhai ore body is a syncline, strata in the core and two limbs had seriously reformed by succeeding magmatic intrusions, and faulted structure in the granite rock mass controlled the enrichment of ore body. For reasons given above, have considered that the distribution and assemblage of ore body in the area are results of integrated activities of magmatic, stratigraphic and structural factors, the ore body belongs to mesothermal to epithermal ore deposit. According to the main ore-forming characteristics, next step of investigation orientation has been put forward.

关 键 词：铅锌矿 俘虏体 花岗岩 云南省合龙寨 

分 类 号：P618.4[天文地球—矿床学]