SIGNIFICANCE AND GEOCHEMICAL CHARACTERISTICS OF RARE EARTH ELEMENTS OF JINSHAN GOLD DEPOSIT,JIANGXI PROVINCE

The Abundance and distribution of rare earth elements(REE)are related to the formatin and evolution of geologic bodies in Jinshan gold deposit.By analyzing and comparing the REE characteristics of wall rock,altered rock zone and ores from the deposit,it is concluded that the REE migrated and enriched during the rock fluid interaction,with inheritance of some constituents from original rocks at the same time.The geochemical characteristics of REE in the auriferous quartz veins indicate that the ore forming fluids are multi-source in nature.The quartz veins are formed by the cooperation of hydrothermal alterations and structural movements at different ore forming stages.The siliceous rock in the orefield,which was firstly found by the study,is geochemically a kind of hydrothermal sedimentary rock mixed with volcanic and/or terrigenous materials,suggesting a hydrothermal exhalative mineralization in the deposit.