摘要
黑龙江嘉荫平顶山岩金矿床的地质特征、形成条件和成因类型的研究表明：矿区内不同阶段的细晶闪长岩、闪长玢岩形成一个含金矿体的脉岩带；矿床范围内圈定5条呈脉状沿北北东向展布的矿体；矿石类型为石英脉型和蚀变岩型；金以裂隙金、晶隙金和明金为主，以银金矿的形式存在，且主要与石英、黄铁矿、毒砂和水云母共生；成矿作用分为热液期及表生期，其中热液期又分为4个成矿阶段，即纯石英阶段，黄铁矿-毒砂-石英阶段，黄铁矿-毒砂-水云母-石英阶段和石英-碳酸盐阶段。金矿体形成于Ⅱ、Ⅲ热液活动阶段，第Ⅲ阶段为主成矿期，成矿温度为100℃～180℃；金矿床的成因类型为岩浆中低温热液金矿床，形成于晚燕山期。
The study of the geological characteristics, ore-forming condition and genetic type from the Pingdingshan gold deposit, shows that the cryptomerous diorite and dioritic porphyrite in different stages formed a vein rock zone with gold containing ore bodies in the area, and five vein ore bodies were blocked out by spreading out with the NNE direction in the field. The ore consists of quartz rein and altered rock in type, dominated by fissure-type gold, crystal-lattice-type gold and visible gold, which are in the form of electrum and associated with quartz, pyrite, dalarnite and hydromica. The ore-forming process is divided into hydrothermal and hypergene stages in which the former is subdivided into 4 stages, i.e. the pure-quartz-, pyrite-dalarnite-quartz-, pyrite-dalarnite-hydromica-quartz-and quartz-carbonate stages. The gold body formed in hydromethermal active stages of Ⅱ and Ⅲ, in which the stage Ⅲ is main ore-forming stage and the formational temperature is at 100℃～180℃. The genetic type of the gold ore is middle-low hydromethermal, and formed in late Yanshanian.
出处
《世界地质》
CAS
CSCD
2006年第3期264-269,共6页
World Geology
关键词
黑龙江嘉荫
平顶山
金矿床
地质特征
成因类型
Jiayin of Heilongjiang
Pingdingshan
gold deposit
geological characteristics
genetic type
