鲁西铜石地区金矿床地质特征及找矿远景  

Geological Characteristics and Prospecting Prospective of the Gold Ore Deposits in Tongshi Area,Western Shandong Province

作　　者：杜显彪[1] 甘延景[1] 郑海涛[1] 

机构地区：[1]山东省鲁南地质工程勘察院,山东济宁272100

出　　处：《金属矿山》2016年第1期109-113,共5页Metal Mine

摘　　要：铜石杂岩体为中生代燕山早期的浅成—超浅成中偏碱性杂岩体,立体形态呈塔松状,由3个阶段的岩浆活动产物(二长闪长岩质岩石、二长斑岩质岩石和隐爆角砾岩石)组成,外围为古生代寒武纪碳酸盐岩,已发现的众多金矿床(点)分布于铜石杂岩体内部及边部。在分析区内成矿带矿化特征、控矿因素的基础上,探讨了区内找矿远景,结果表明:1区内金矿床(点)可分为2组近正交的成矿带,即走向约35°的钢联—磨坊沟—小广泉成矿带和走向约300°的卓家庄—十字庄—归来庄成矿带,走向约30°的和气庄—董李—东大湾成矿带和走向约295°的张里东岭—银洞沟—马家宅子成矿带,矿区大多金矿床(点)受控于与该2组成矿带平行或正交的构造破碎(裂隙)带。2区内找矿重点应集中于"一带一区",即铜石前火山杂岩体的北外环带和次火山杂岩体周边外缘张性断裂发育区,区内金矿的形成与二长斑岩有直接关系,与下寒武统朱砂洞组丁家庄段地层关系较密切。上述研究成果对于鲁西铜石地区的找矿工作有一定的参考价值。The Tongshi miscellaneous rock mass is the hypabysaal-super meta-alkaline hypabysaal miscellaneous rock mass in Mesozoic early Yanshan period. The three-dimensional shape of the miseellaneous rock mass like a pagoda, it is con- sists of three stages of the products （ monzonitic diorite rock mass, monzonitie porphyry rock mass and cryptoexplosive breccia rock mass） of magmatic activities. The Paleozoie cambrian carbonate rock mass is distributed in the periphery of the Tongshi miscellaneous rock mass. A large number of gold ore deposits （points） that have been found are located in the inner and outer spaee of Tongshi miseellaneous rock mass. Based on analyzing the metallogenic belts characteristics, mineralization characteris- tics, ore-controlling factors of Tongshi area, the prospecting prospective of Tongshi area is discussed in depth, the results show that：①the gold ore deposits （points） in Tongshi area can be divided into two orthogonal metallogenie belts, Ganglian-Mofang- gou-Xiaoguangquan metallogenie beh with striking about 35° and Zhuojiazhuang-shizizhuang-Guilaizhuang metallogenie belt with striking about 300°, Heqizhuang-Dongli-Dongdawan metallogenic belt with striking about 30° and Zhanglidongling-Yin- donggou-Majiazhaizi metallogenie belt with striking about 295° ,most of the gold ore deposits （points） in Tongshi area are con- trolled by the structural fractured （crack） belts that they are parallel or orthogonal with the above two orthogonal metallogenie belts. ②the prospecting direction of Tongshi area is the ＂one belt＂ and ＂one zone＂,＂ one belt＂ is the outer ring belt of Tongshi voleanie-intrusive miscellaneous roek mass, which is located in Zhuojiazhuang-Shizizhuang-Guilaizhuang metallogenie belt; ＂ one zone＂ is the extension fracture development zone, which is around the outer ring of sub-volcanic intrusive miscellaneous rock mass, the relationship between gold metallogenie in Tongshi area and monzonitie porphyry is direet, besides that, the rela- tion

关 键 词：杂岩体 成矿带 矿化特征 控矿因素 找矿远景 

分 类 号：P612[天文地球—矿床学] P611[天文地球—地质学]