本文選題：居隆庵鈾礦床　切入點(diǎn)：綠泥石　出處：《巖石礦物學(xué)雜志》2017年04期 　論文類型：期刊論文

【摘要】：位于相山鈾礦田西部的居隆庵鈾礦床綠泥石化十分強(qiáng)烈,本文在對鉆孔巖心樣詳細(xì)的野外和室內(nèi)巖相學(xué)觀測基礎(chǔ)上,利用電子探針技術(shù)研究了綠泥石的產(chǎn)出狀態(tài)及共生組合關(guān)系,并測定了其化學(xué)成分,探討了該礦床綠泥石地球化學(xué)特征及其與鈾礦成礦的關(guān)系。研究表明:①該礦床存在黑云母蝕變形成的綠泥石、長石蝕變形成的綠泥石、脈狀綠泥石和與鈾礦密切共生的綠泥石共4種類型綠泥石;②該礦床以蠕綠泥石和鐵鎂綠泥石為主,個(gè)別為鮞綠泥石,其形成溫度介于190.5~269.9℃之間,平均為224.5℃,屬于中低溫條件;③該礦床綠泥石形成于還原環(huán)境,形成機(jī)制分為溶解-沉淀機(jī)制和溶解-遷移-沉淀機(jī)制兩種;④綠泥石化過程改變了圍巖的物理化學(xué)性質(zhì),改變了鈾在巖石中的賦存狀態(tài)并促使鈾的預(yù)富集。
[Abstract]:The green mud fossilization of the Julongan uranium deposit located in the west of Xiangshan uranium field is very strong. The production state and symbiotic association of chlorite were studied by electron probe technique, and the chemical composition of chlorite was determined. The geochemical characteristics of chlorite and its relationship with uranium mineralization are discussed. The results show that there are chlorite formed by biotite erosion and chlorite formed by feldspar erosion in the W 1 deposit. There are four types of chlorite of vein chlorite and chlorite closely associated with uranium deposit. The deposit consists mainly of vermicular chlorite and ferric magnesium chlorite, some of which are oolitic chlorite. The formation temperature of the deposit is between 190.5 and 269.9 鈩，

本文編號(hào)：1610825