Abstract:

In the paper, we analyses the geochemical elements including major elements, trace elements and rare earth elements of ore samples and ore-wall rock samples with different depths in the Zoujiashan mineral deposit of Xiangshan uranium ore field. Two conclusions have been reached as follows. The ore samples of the different depth in the Zoujiashan mineral deposit experience the alteration process of alkaline-acidic-alkaline, and the acidic alteration achieve to the strongest degree in the depth (-85 m); the alkaline alteration is enhanced with the increase of depth. Contents of trace elements, rare earth elements and U show that the metallogenic materials should not be from the ore-wall rock, but from rhyolite dacite magma. Further analysis based on the R cluster close to the mineralization of 13 elements, the ore-forming hydrothermal systems of the Zoujiashan deposit are divided into high temperature hydrothermal fluids and middle-low temperature hydrothermal fluids.

Key words: Zoujiashan uranium deposit in Xiangshan uranium ore field, hydrothermal alteration, metallogenic material, element geochemistry, Jiangxi Province