REE CHARACTERISTICS OF THE HOST STRATA AND TECTONITE IN THE JINHONG LEAD-ZINC DEPOSIT IN YUNNAN PROVINCE

With study of regional geological background, the REE compositions of the ore-hosting strata and orecontrolling fault rocks in the Jinhong Pb-Zn deposit are analyzed. The REE distribution patterns and characteristics show that the ore-hosting dolostone belongs to LREE enrichment-HREE flat type, with highly fractionated light and heavy rare earth elements, notable Eu and Ce anomalies, quite different (La/Yb)_N,(La/Sm)_N and (Gd/Yb)_N values. The tectonite is also LREE enrichment-HREE flat type, with high fractionation of LREEs and HREEs, weak Eu anomaly, distinct Ce anomaly, similar(La/Yb)_N, (La/Sm)_N and (Gd/Yb)_N values. The above characteristics are micro-indicators for metallogenic prediction.