河南卢氏官坡—五里川锑矿带稀土元素特征及与成矿的关系  

REE characteristics in Guanpo- Wulichuan antimony belt in Lushi,Henan Province and its association with metallogenesis

作　　者：肖光富[1] 武禄川 

机构地区：[1]中国黄金集团中原矿业有限公司

出　　处：《黄金》2014年第9期24-29,共6页Gold

摘　　要：为了研究河南省卢氏县官坡—五里川锑成矿带成矿机制,对其稀土元素地球化学特征进行分析。锑矿带内锑矿石及其他类型岩石轻、重稀土元素比值较高,且都呈现为Eu负异常,稀土元素配分模式总体上表现为轻稀土富集型。锑矿带内各种类型岩(矿)石中稀土总量分布表现出一定规律性,大理岩、锑矿石中稀土元素总量较高,构造带岩石及附近围岩的稀土元素总量偏低,说明锑矿带的锑及成矿热液主要来自于下地壳和上地幔,热液上升过程中锑矿床经历了多阶段的分馏、交代作用,导致稀土元素从围岩中大量迁出,并富集于锑矿床内。In order to study the ore-forming mechanism of Guanpo - Wulichuan antimony belt in Lushi, Henan Province, REE geochemical characteristics are analyzed. Light and heavy REE ratio in antimony ores and other type rocks in the belt is relatively high and displays an Eu negative anomaly. The allocation of REE generally takes the form of enrichment of light REE. Certain regularities exist in REE distribution in all kinds of rocks（ores） in the belt. Total amounts of REE content in marbles and antimony ores are higher while lower in ores in tectonic belt and its surround- ing rocks, indicating that antimony and its-ore-forming fluids mainly come from lower crust and upper mantle. When the fluids rose, they went through many stages of fractionation and metasomatic replacement, making REE displaced from the surrounding rocks and enriched in the deposit.

关 键 词：官坡—五里川锑金属成矿带 矿带地质特征 稀土元素特征 河南省卢氏县 

分 类 号：TD11[矿业工程—矿山地质测量] P618.65[天文地球—矿床学]