摘要
东堡子金矿床赋存于远离火山喷发中心的哨子河火山－沉积盆地南缘粗面斑岩中，矿床的成因类型属于与碱性次火山岩有关的浅成低温热液硅化岩型金矿粗面斑岩中成矿前北东－东西断裂破碎带为矿化蚀变带的形成奠定了构造基础．成矿前及成矿期节理裂隙系统在矿化蚀变带基础．上具体控制矿体的形成与分布．东堡子粗面斑岩即是成矿母岩又是矿体的围岩，粗面斑岩次火山期后热液和金矿流体，在粗面砂岩中形成蚀变和金矿化、金矿化与黄铁矿化、硅化及成矿期石英细网脉关系密切，特别是后者的发育程度具有决定性的作用．
Dongpuzi gold deposit is occured in the porphyroblastic trachyte, which is not in the center of erruption but the southern margin of Shaozihe volcanic-sedimentary basin. It belongs to alkaline rockrelated, subvolcanic hydrotherm deposit. Porphyroblastic trachyte is both metallogenetic parent rock and wall rock. Postvolcanic hydrotherm and fluids produce alteration and mineral nation. Gold mineralization is closely related to pyritization, stilication and fine network of quartz, and the later is decisive to form gold deposit.
出处
《黄金学报》
2000年第1期1-5,共5页
Gold Journal
关键词
次火山热液
金矿床
地质特区
成矿条件
gold deposit, subvolcanic hydrothermal, alkaline subvolcanic rock.
