新疆巴里坤县拉伊格来克膨润土矿Ⅰ矿段膨润土矿物学特征  被引量:2

Mineralogical Characteristics of Bentonite From Ore Block I, Layigrac Bentonite Mine of Barkol County in Xinjiang

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作  者:沙鑫[1] 汪立今[1] 宋来忠 

机构地区:[1]新疆大学地质与勘查工程学院,乌鲁木齐830046 [2]新疆地矿局第一区域地质调查大队,乌鲁木齐830000

出  处:《桂林理工大学学报》2013年第4期599-604,共6页Journal of Guilin University of Technology

基  金:国家自然科学基金项目(40862004);新疆自然科学基金项目(2011211A018)

摘  要:拉伊格来克膨润土矿主要是由玄武岩、玄武安山岩及中酸性火山碎屑岩于火山盆地沉积,后经过流体作用发生水解蚀变而成。结合成矿地质背景,从矿物学角度研究了矿区Ⅰ号矿段膨润土的矿石特征、蒙脱石化学成分、物化性质、矿物组构、应用属性等,结果表明:蒙脱石平均含量68.01%; w (Al2O3)18.45%,含量相对较高;矿石胶质价(>100 mL/15 g)、膨胀容(36.0 mL/g)、比表面积(395 m2/g)均偏高; ENa +/CEC>69.0%; X射线衍射分析, d(001)在1.22~1.35 nm。综合认为该矿段膨润土主要属钠基和钙钠基,蒙脱石相对含量高,质地优,耐热性能强,是一种优质的膨润土矿产资源。The Layigrac bentonite mine formed mainly by fluid action ,hydrolyzed and altered the basalt, basalt-ic andesite and intermediate-felsic volcaniclastic rock deposited in the volcanic sedimentary basin .From miner-alogy geological background, the mineralogical characteristics, chemical composition, physical-chemical proper-ties, mineral fabrics and application attributes of montmorillonite from Ore Block I are studied .The conclusions are: (1)Average content of montmorillonite is 68.01%, and w(Al2O3) is 18.45%, showing a relatively high level.(2)The ore displays a slightly higher glial price ( >100 mL/15 g),in swelling capacity (36.0 mL/g) and specific surface area (395 m2/g).(3) ENa +/CEC>69.0%.(4) X-ray diffraction analysis discloses the minerals d(001) value of 1.22-1.35 nm.Therefore, the bentonite in the ore block is a kind of high-quality bentonite mineral resource with combined attributes of sodium base and calcium-sodium base,relatively higher contents of montmorillonite, excellent texture, and strong heat resistance.

关 键 词:膨润土 矿物学 拉伊格来克 巴里坤 新疆 

分 类 号:P619.255[天文地球—矿床学] P574[天文地球—地质学]

 

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