摘要
独石口沸石矿位于沽源晚侏罗世火山—沉积盆地南缘,赋矿地层主要为张家口组上亚组凝灰岩。矿床沉积古环境为小型陆相淡水盆地,盆地发育受燕山期岩浆岩侵入影响,在一系列同沉积断裂构造控制下形成。含矿层形成至今,矿区始终处于相对下降趋势。矿石矿物组分单一,主要为斜发沸石,矿化均匀,品位稳定,沉积环境稳定持久,矿床类型为内陆淡水湖火山碎屑沉积型矿床。同时代火山—沉积盆地成矿潜力巨大。
The Dushankou zeolite deposit is located in the southern margin of the Late Jurassic volcanic-sedimentary basin in Guyuan,and the ore-bearing strata are mainly the upper subgroup tuff of the Zhangjiakou Formation. The sedimentary paleo environment of the zeolite deposit is a small-scale continental freshwater basin; its development is affected by the Yanshanian magmatic rock intrusion and is formed under the control of a series of synsedimentary fault structures. The mining area has been in a relatively downward trend since the formation of the deposit. The ore mineral composition is simple,mainly clinoptilolite. The deposit has even mineralization and stable grade,indicating a stable and long-lasting sedimentary environment. The deposit type is a volcano-clastic sedimentary deposit in inland freshwater. The zeolite deposits formed in contemporaneous with volcano-sedimentary basins indicates that the mineralization has a great potential.
作者
谷振飞
GU Zhen-fei(The 3rd Brigade of Geology HBBGMR,Zhangjiakou 075000)
出处
《矿产勘查》
2018年第7期1360-1365,共6页
Mineral Exploration
关键词
独石口
沸石矿
晚侏罗世
张家口组
火山-沉积盆地
河北
Dushikou
zeolite deposit
Late Jurassic
Zhangjiakou Formation
volcano-sedimentary basin
