甘肃省铷矿地质特征与成矿规律分析

Research on characteristics and metallogenic regularity of Rb ore in Gansu Province

自2010年来,甘肃省在稀有金属铷找矿方面取得了重大突破,发现了一批具有大型-超大型资源前景的矿产区。本文通过系统研究甘肃省铷矿资源特征,以最新发现的矿(床)点为重点,按照不同成矿类型阐述了各矿区的矿体地质特征,总结了区域成矿规律,发现铷矿产分布具有较强的规律性,矿点分布以北山地区最多,西秦岭次之;绝大部分矿点产出于古老地块的边缘,晚太古-古元古界变质地层是主要的赋矿围岩地层,矿体主要产出于华力西中晚期侵入的花岗岩和伟晶岩中。

Since 2010,major breakthroughs in Rb ore prospecting have been made in Gansu Province.A number of mineral deposits with very large resource potential have been found.This paper discusses the characteristics of Rb mineral resources in a newly discovered deposit in Gansu province,the geological characteristics of the ore body according to the different mineralization types in this mining area,and the regional metallogenic regularity.Results show that the distribution of Rb ore has strong regularity of distribution and is mostly deposited in the Beishan area,followed by the West Qinling area.Most of the deposits are located in the old block edge and the Late Archean-Paleoproterozoic metamorphic strata form the major stratum.The orebodies occur mainly in the Late Variscan intrusive granite and pegmatite.