云南省澜沧老厂—孟连茶场地区成矿规律及找矿方向探讨

澜沧老厂—孟连茶场地区位于昌宁—孟连多金属成矿带，研究区域成矿规律对找矿突破有着重要指导意义。在综合分析研究地质背景、化探异常、矿产分布等特征的基础上，将该地区划分为老厂、拉巴、孟连矿（化）集区。老厂铅锌矿床是区域上的典型矿床，其在化探异常、矿床空间分布具有明显的低中高温成矿分带的特征。以该矿床分带特征入手，指出老厂矿（化）集区在地表以低温成矿元素为主，而拉巴、孟连矿（化）集区在化探异常、矿化特征均以低中温成矿元素为主，空间上分带特征不明显。该地区化探异常、矿（化）体分布特征，均表明区域上成矿温度、成矿标高由北至南均具从高到低的降低趋势，认为其可能与燕山期岩浆活动的差异性有关，指出老厂外围、拉巴深部是找矿的有利靶区。

Discussion on Metallogenic Regularity and Prospecting Direction of Lancang Laochang Menglian Chachang Area in Yunnan Province

Lancang Laochang Menglian Chachang area is located in the Changning Menglian polymetallic metallogenic belt,and the study of regional metallogenic laws has important guiding significance for prospecting breakthroughs.On the basis of comprehensive analysis and study of geological background,geochemical anomalies,mineral distribution and other characteristics,the area is divided into Laochang,Laba and Menglian Mine (chemical) concentration areas.Laochang lead zinc deposit is a typical deposit in the region.Its anomalous geochemical exploration and spatial distribution of the deposit have the characteristics of low,medium and high temperature metallogenic zoning.Starting with the zoning characteristics of the deposit,it is pointed out that the Laochang Mine (chemical) concentration area is dominated by low temperature metallogenic elements,while However,the geochemical anomalies and mineralization characteristics of the Laba and Menglian deposits are dominated by low medium temperature metallogenic elements,and the spatial zoning characteristics are not obvious.The geochemical anomalies and the distribution characteristics of ore (chemical) bodies in this area indicate that the regional metallogenic temperature and metallogenic elevation have a decreasing trend from high to low from north to south,which is considered to be different from the magmatic activity in Yanshan period,pointed out that the periphery of Laochang and the deep part of Laba are favorable target areas for prospecting.