| The Baiyanghe area is located in the western part of Xuemistan volcanic belts, The magma evolution series of Xuemistan volcanic is completely, regional deep faults control the distribution of the volcanic sub-volcanic body and its related deposit, secondary faults and rock interface, the lava levelis the site of the occurrence of specific mineralization, Baiyanghe uranium-beryllium ore field is the most concentrated areas of uranium-beryllium mineralization.According to Geological field work and geochemical analysis, the source of the ore-forming fluids of the Baiyanghe uranium-beryllium deposits, achieved the following understanding:1、The distribution patterns of rare earth elements in beryllium uranium granite porpHyry indicate that, the fluid magma source comes deeply, is Aluminosilicate crust remelting granitic magma;2s C, O, S-isotope values range (-4.9‰-10.99‰;14.4‰21.6‰;5‰-10‰) indicate that the ore-forming fluid is a mixture of magmatic hydrothermal fluids and groundwater.3、The distribution curves of Granite porpHyry and ore REE are broadly similar, indicating the minerals from the granite porpHyry.4、Isotopic dating results show that the Baiyanghe uranium-beryllium mineralization belong to the same ore-forming system, is a product of the same ore-forming process of different mineralization stages of hydrothermal... |
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