A Study Of Geochemical Characteristics Of The Baitoushan Rb Deposit In Beishan Metallogenic Belt, Gansu Province

As the significant resources in modern times, the application of the rare earth elements, the rare elements and the dispersed elements are widely applied in aviation, aerospace, electronics and other high-tech field of science and technology. Based on the researches carried out on the characteristics of element content, the law of element migration and geochemical anomaly in BaiTouShan Rb deposit, this paper has confirmed that the direct indicator element of the ore body is Rb and the Indirect indicator elements are T1、Ga, Be、Bi、Na2O and K2O in this location. Meanwhile, the analysis on the mineral component of ore body、alteration zone and the wall rocks reveals that the Rb-bearing minerals mainly consist of the orthoclase and muscovite. The mineral assemblages in ore is demonstrated as potassium feldspar white mica、quartz、plagioclase、 biotite and garnet in small quantities, in addition, the biotite、amphiboles、plagioclase、quartz and potassium feldspar is regarded as the characteristic minerals in alteration zone, while the feature minerals of wall rocks is composed of plagioclase、biotite、quartz、amphiboles and potassium feldspar. On the basis of the mentioned above, further studies on the the supergenic geochemical anomaly of BaiTouShan Rb deposit is carried out though the soil measurements with the sale of1:10000and1:50000. The results suggest that the instructive element combination is Rb、T1、Be, A12O3、Li、Ga、 F、La、Ce and Sr in large scale supergene environment, while the indicator element association in medium-small scale supergene environment is Rb、T1、K2O、Be、Ga and Bi, which is clearly shown that the element assemblages formed in the supergene environment has a good inheritance with the characteristics of the primary anomaly. Thus, the appropriate geochemical indicators is obtained that the characteristic elements assemblages of BaiTouShan Rb deposits is Rb、T1、 Ga、Be、Bi and K2O, simultaneously, the research of the geochemical anomaly structure model is also involved, which not only provides the geochemical indicators in prospecting Rb and other rare metal deposits in BeiShan areas, but also offers the foundation and basis for geochemical exploration methods and techniques.