广西隆或金锑矿床稀土、微量元素地球化学特征及其地质意义

隆或金锑矿床是广西右江成矿带新近发现的重要矿床,为了探讨其成矿流体来源,对其地质背景、矿石及围岩的稀土、微量元素地球化学特征进行对比分析研究.结果表明:矿床赋存于下石炭统-上泥盆统一套碳酸盐岩地层中.矿体呈似层状、脉状,主要受近东西向断裂控制.元素地球化学特征指示隆或金锑矿床成矿流体具有壳幔混合特征,但富矿围岩可能不是...

Geochemical Characteristics of REE and Trace Elements Compositions and Geological Significance of Longhuo Gold-antimony Deposit in Guangxi

Longhuo Gold-antimony deposit is an important deposit which is recently discovered in Youjiang metallogenic belt of Guangxi. In order to explore the ore-forming materials source of this deposit, the geological background of the deposit and the geochemical characteristics of rare earth and trace elements of wall rocks and orebodies are systematically compared. The results show that: orebodies are mainly located in Carbonate of the Lower Carboniferous-lupper devonian formation, and controlled by the fault near the east-west direction, and show layer-like and vein shape. The element geochemical characteristics indicate that the ore-forming fluid of the deposit has the characteristics of crust-mantle mixing. The ore-bearing wall rock may not be the main source of ore-forming materials. The main ore-forming material may be brought by deep-source fluids in the mantle. The fluid is a reducing environment fluid system with Cl~->F~-.Based on the geological features of the deposit, it is considered that the Longhuo Gold-antimony deposit is a medium to low temperature hydrothermal gold deposit.