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热液型金矿主要受岩性、构造及蚀变控制,蚀变使含矿构造破碎带与围岩之间、蚀变岩与正常岩石之间产生放射性差异,这是伽马能谱法勘查金矿的前提。黑龙江省乌拉嘎金矿外围柳树河地区在伽马能谱扫面测量之后,圈定出四个伽马能谱异常地段,均具三高一低(K、Th、总道高、U低)的特征,反映了含金破碎带及矿体的存在。经工程揭露,证实金矿体延深200m以上,由此说明伽马能谱测量找金的有效性。
The hydrothermal gold deposit is mainly controlled by lithology, tectonics and alteration. The alteration results in radioactive difference between the ore-bearing structural crust and the surrounding rock and between the altered rock and the normal rock. This is the result of gamma-ray prospecting Gold mine premise. Four areas of gamma-ray anomalies were delineated in the Liushuhe area around the Wulaga gold deposit in Heilongjiang Province after gamma-ray profiling, with three high and one low (K, Th, total height, U low) Characteristics, reflecting the existence of gold-bearing fractured zone and ore body. Revealed by the project, gold ore deeper than 200m, thus indicating the effectiveness of gamma spectrometry to find gold.