陕西金堆城斑岩型钼矿床地质地球化学特征

The Geological and Geochemical Characteristics of the Jinduicheng Mo Deposit, Shaanxi

1.
Hanzhong Subsidiary Court, Northwestern Geologic Exploration Bureau of China Exploration and Engineering Bureau, Hanzhong 723000, China
2.
Shaanxi Provincial Centre of Planning and Approvine of Land and Resources, Xi'an 710054, China
3.
Xi'an Institute of Geology and Mineral Resources, Xi'an 710054, China

摘要: 金堆城钼矿床的成矿母岩是燕山中晚期花岗斑岩类。该岩类为高硅富钾富含H₂O、F、Cl等挥发分的壳源花岗岩类,是区域内含Mo等成矿元素较高的熊耳群安山玢岩类和高山河组石英岩类花岗岩化的产物。岩体和矿体主要受北西向断层控制。矿体中心部位形成气化高—中温以2H型为主的辉钼矿,边部形成中温2H+3R型辉钼矿,造就了斑岩型钼矿床。
- 地质 /
- 地球化学 /
- 钼矿床 /
- 金堆城
Abstract: Granite-po rphynes in mid-late Yanshan Period is the ore-forming mother rock of Jinduicheng Mo deposit.Rich in Kand volatile flux such as H₂O,F,and Cl,the rock belongs to the crust-derived granite, and is the resultof granization of andesite porphy rites in Xionger Group and quartzites in Gaoshanhe Formation with high percent age in ore-forming elements such as Mo,in the region.The rock and ore body is dominated essentially by a north-west strike fault.Molybdenite mainly in 2H-type thatex perienced gasification and mid-high temperature is distributed in the center of the ore body.On the edge,2H+3R type moly bdenite was fo rmed in mid-temperature environment.Thus,the porphyry Modeposit was formed.
- geology /
- geochemistry /
- Modeposit /
- Jinduicheng