滇西上芒岗红色粘土型金矿常量元素地球化学
Major elememt geochemistry of shangmangggang red clay-type gold deposit in the west of yunnan

饶文波 ¹ 高振敏 ¹ 罗泰义 ¹ 杨竹森 ¹ 李红阳 ¹ 陶琰 ¹ 谱传杰 ²

文摘	滇西上芒岗红色粘土剖面中常量元素的垂向分布研究表明，K-2O、Fe-2O-3、Al-2O-3在剖面中的变化一致，呈双峰曲线变化，即在坡积带稍有富集、在残积带明显富集；而Si-2、铝等在剖面中的变化相反。红色粘土与矿区地层和矿化蚀变岩的常量元素对比分析表明了红色粘土可能来源于地层和矿化蚀变岩。常量元素之间的相关性以及常量元素与金的相关性分析表明K-2O、Fe-2O-3、A1-2O-3在红色粘土中为共生元素；金的富集主要受红色粘土中褐铁矿和伊利石的吸附影响。红土化参数分析说明了红色粘土剖面经历两次红土化作用，残积带相对于其它带经受过较强的红土化作用，但整个红色粘土剖面遭受的红土化作用不强，红土化程度低，仅处于粘土化阶段。
其他语种文摘	We analyzed the distribution of major elements in the red-clay profile. The results indicated K-2O varied in consistence with Fe-2O-3 and Al-2C-3 in red clay. Their contents are slightly high in the slopewash zone and distinctly high in the elu-vial zone. Si O -2 varied in opposition to Fe-2O-3 and M203. Differences in contents between major elements of red clay and those of strata and mineralized and altered rocks indicated the strata and mineralized and altered rocks were the sources of red clay. Correlations among major elements and between major elements and gold indicated K-2 O, Fe-2 O-3 and M-20-3 were coexisting oxides in red clay. The enrichment of Au mostly resulted with adsorption of illite and limonite in red clay. Lateri-tization parameters for the Shangmanggang red clay-type gold deposit indicated that the red-clay profile has experienced two phases of laterization.
来源	矿物学报 ,2003,23(2):169-176 【核心库】
关键词	常量元素；红土化参数；红色粘土型金矿；滇西上芒岗
地址	1. 中国科学院地球化学研究所, 矿床地球化学开放研究实验室, 贵州, 贵阳, 550002 2. 云南省黄金管理局, 云南, 昆明, 650051
语种	中文
文献类型	研究性论文
ISSN	1000-4734
学科	地质学
基金	国家自然科学基金 ; 中国科学院重大A项目
文献收藏号	CSCD:1339825