The regional metallogenic characteristics and prospecting criteria of boron deposit in Kuandian area of Liaoning Province

Boron deposit in Kuandian area of Liaoning province has rich resources.The boron deposits occur in Liaohe group Lieryu formation,which lithology is mainly composed of phlogopite serpentinite and serpentine marble showing the obvious metallogenetic specialization.And boron deposits have a close space relationship with Liaoji granite.Not only that,the destruction and reconstruction of late fold and fault structure cannot be ignored.The background and threshold of boron are 3.9ppm and 6.0ppm basing on some geochemical prospecting data in scale 1:200000.The peak values are between 14.5ppm and 450 ppm of different anomalies.In addition,Kuandian boron deposits are distributed in some strapped positive magnetic anomalies or occurring within the gradient grade zone of some magnetic anomalies.Accordingly,basing on the position of the favourite ore-forming country rocks and connecting all obtained information with the boron prospecting model,geochemical and geophysical anomaly should be regarded as important criteria for ore prospecting.