Study On Genesis Of Baiyuanghe Urbanium-beryullium Deposit In Hebukeser, Xinjiang

Baiyanghe uranium-beryllium deposit is located in northwestern Xinjiang,it is one of the main base of exploration and production of uranium-beryllium ore of volcanic rock belt of Xuemistan in Xinjiang. Detailed studies on the regional geology and the local geology of the deposit have been carried out in this study,systematic microscopic observation of the ores,the contents of trace elements,rare earth elements and the C,O,S isotopic compositions of the ores have been analyzed.Based on these data,discus on metallogeny and genesis of Baiyanghe uranium-beryllium deposit.Finally, Papers obtained by the knowledge:1.Neopaleozoic, this area was in the time of orogenic crumpling to extensional. In the Environment of regional tension, geofracture control the granite and subvolcanic rocks, With the formation of the West Junggar area volcanic-type uranium-beryllium mineralization potential favorable structural environment.2. High content of rare earth in granite porphyry,LREE was enrich than HREE, and has a strong negative Eu anomaly, show that the crustal source of the material type.3.Granite porphyry's trace elements of Be,U abundance value was very high, to provide source for metallogenic.4.Uranium-beryllium deposit growing in contact zone that between granite porphyry with stratigraphic,it is suggested that metallogenic have to do with hydrothermalism.5.Fluorite have different four color in this deposit, and the rare earth element have different four distribution pattern,but fluorite with high beryllium is purple-black and purple; Inclusions in fluorite are divided into two,one is show groups distribution, small,the test results reveal low salt and low temperature;and another is show Isolated distribution,big, the test results reveal low salt and medium temperature. Above these two aspects point the mineralization is multiple phases. 6. Genesis of the Baiyanghe uranium-beryllium deposit:Remelting of the crust produced by the intrusion of magma along the fault. Forming a large number of elements deep into the shallow crust and Formation of U, Be a high abundance of granite porphyry.Activation of the granite porphyry's Mineralization when deep underground source of hot fluid migration increased, these are rich in ore-forming elements in the low temperature hydrothermal, migrated along the contact zone when the development of fissures in the ore-forming elements in the precipitation,late the formation of epithermal ore have been conducted a number of superimposed. The final, formation of such low temperature hydrothermal deposits.