摘要
湖北省竹溪地区的铌稀土矿多富集于正长岩、正长斑岩、次粗面岩等岩石中,矿体与围岩界线肉眼难以辨识。为了提高找矿效果,采用地面γ能谱测量这一地球物理勘探方法,通过研究岩(矿)石放射性,以及钍钾、钍铀、铀钾比值等参数的特征,圈定了剖面内矿化有利地段,为后期找矿工作提供了靶区。
Niobium-rare earth ore is mainly rich in syenite, syenite porphyry, subtrachyte etc, in Zhuxi Area. Since theores could not be differentiated just with naked eye for an available and convenient way to distinguish the both the authorsintroduce one method of geophysical exploration-ground gamma spectrometry. By measuring of the content of uranium,thorium, potassium in rock, and researching on its radioactivity, the ratio between uranium, thorium and potassium, theysuccessfully divide ores and wall rocks in cross section, and provide several prospecting targets for the further exploration.
出处
《资源环境与工程》
2016年第6期994-998,共5页
Resources Environment & Engineering
关键词
铌稀土矿
正长岩
次粗面岩
Γ能谱测量
地球物理勘探
钍钾、钍铀比值
NB rare earth ore
syenite
subtrachyte
ground gamma spectrometry
geophysical exploration
the ratio be-tween thorium and kalium
the ratio between thorium and uranium
