摘要
Qierikeqi siderite deposit occurs in low-metamorphic rocks of Silurian System Wenquangou Group and it is composed of three ore bodies, which are typically layer or lens-like and about 1500~2 500 meters long, 10~70 meters thick. The ores have a high total content of rare earth elements (∑REE=740.97~820.21 ppm), and the enrichment characteristics of light rare earth elements (LREE/HREE=13.17~14.74) suggest that the siderite is formed in medium-low alkali ore-bearing solution. The apparent positive anomaly of Ce(δCe=3.25~4.56) and feeble negative anomaly of Eu(δEu=0.64~0.94) indicates the relative reduction metallogenic environment. The Y/Ho average value of ore and siderite are both less than 28, which shows the deposits with hydrothermal genesis characteristics.