摘要
巴仁扎拉格钠闪石花岗岩体呈小岩株状侵入于侏罗系火山岩形成的短轴背斜轴部,铀矿床主要位于岩体顶部。通过勘探和取样分析,对铀矿床矿体分布,矿石矿物组成、结构构造、化学成分,铀赋存状态,岩石蚀变等特征进行详细研究,认为铀矿体呈穹隆状分布在岩体顶部强蚀变和强风化带中,铀主要呈类质同象分散在深色锆石及其它矿物中,少量为铈铀钛铁矿、硅铅铀矿等独立矿物。岩体蚀变分带性控制铀矿化强度,顶部强蚀变带铀品位最高,矿化厚度较稳定,向下随蚀变强度减弱铀矿化逐渐减弱。研究成果可为铀资源的综合开发利用提供依据。
Barenzhalage pluton is a small riebeckite granite stock which intrudes the shaft of anticline of the Jurassic volcanic rocks.Uranium deposit is located at the top of the stock.Through exploration and analysis of samples,detailed study was finished on the distribution of ore body in uranium deposit,mineral composition of ore,rock structure,chemical composition,occurrence state of uranium,rock alteration and so on.The study shew that uranium ore bodies are distributed in the top of the dome with strong alteration and weathering.The uranium is mainly in the form of isomorphism of the dark zircon and other minerals,and a small amount occurred as davidite and kasolite.Rock alteration zonation controls uranium mineralization closely.The strong alteration zone which is located on the upper part has the highest uranium grade and stable thickness mineralization.With the increase of depth,uranium mineralization grade decreased with the weakening alteration.The study results provided the basis for the comprehensive development and utilization of uranium resources in the next step.
出处
《世界核地质科学》
CAS
2016年第1期14-18,共5页
World Nuclear Geoscience
关键词
铀矿化
特征
巴仁扎拉格
uranium mineralization
characteristic
Barenzhalage
