干旱区生态环境知识资源中心(Arid): 新疆东戈壁钼矿弱胶结层元素分布规律研究

Arid

	新疆东戈壁钼矿弱胶结层元素分布规律研究
其他题名	Distribution of Element in the Weak Cementation Layer Over the East Gobi Molybdenum Ore,Xinjiang
	杨刚刚 1; 李方林 2; 张雄华 2
来源期刊	新疆地质
ISSN	1000-8845
出版年	2018
卷号	36 期号:3 页码:309-314
中文摘要	以新疆东戈壁钼矿为例,研究矿体上方弱胶结层不同粒级土壤中元素分布规律及成因,主成矿元素活动态赋存形式,为金属活动态测量法在戈壁荒漠区寻找钼矿提供依据。本次研究发现,Mo、Cu等成矿及伴生元素在弱胶结层(10~40 cm)中倾向于向两极富集,即最粗粒级(-4~+20目)和最细粒级(-160目)含量较高。在粗粒级中富集与粗粒岩屑保留了原岩矿化信息有关;在细粒级中富集与细粒土壤中粘土矿物、铁锰氧化物能有效捕获从深部矿体迁移上的活动态金属元素,形成元素含量二次叠加有关。活动态Mo、W元素主要赋存于水提取态中,活动态Cu主要赋存于铁锰氧化物态中。在大面积基岩出露的剥蚀戈壁区,采集弱胶结层粗粒岩屑样品即能反映异常;在覆盖区进行钼矿地球化学调查时,采集弱胶结层中细粒级样品为佳,能有效捕捉深部含矿信息。
英文摘要	This paper takes the East Gobi Molybdenum Ore in Xinjiang as an example,to study the element distributing and reason for the formation,mobile existence forms of main metallogenic elements.Provide the basis for study conducted on the MOMEO indicating effect of the molybdenum deposit in the Gobi Desert Terrain.Studies show that Mo、Cu,ect elements are enriched in coarse(-4~+20 mesh) and fine (-160 mesh)fractions of the samples from weak cementation layer(10-40cm) over the East Gobi Molybdenum Ore.There are weathering products from partial original rock in coarse fractions containing much mineralization information;therefore,the content of elements in coarse fractions is relatively high.The relative enrichment of elements in fine fractions soil is caused by the secondary overlying content in mobile forms in fine fractions containing active metal elements migrated from the deep ore body which are captured by geochemical barriers that are formed by clay minerals,ferro-manganese oxides and etc.due to their strong absorbability.The mobile Mo and W are mainly extracted from water,while the mobile Cu is mainly extracted from the ferro-manganese oxideses.Sampling of coarse fraction of samples from weak cementation layer,can effectively react abnormal in the denuded Gobi area.Sampling of fine fraction of samples from weak cementation layer are cost-effective method for molybdenum deposit exploration in the Gobi coverage area.
中文关键词	东戈壁钼矿 ; 弱胶结层 ; 元素分布规律 ; 活动态赋存形式
英文关键词	East Gobi Molybdenum Ore Weak cementation layer Element distribution Mobile existence forms
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MINERALOGY
WOS研究方向	Mineralogy
CSCD记录号	CSCD:6334027
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238522
作者单位	1.新疆维吾尔自治区地质调查院, 乌鲁木齐, 新疆 830000, 中国; 2.中国地质大学(武汉), 武汉, 湖北 430074, 中国
推荐引用方式 GB/T 7714	杨刚刚,李方林,张雄华. 新疆东戈壁钼矿弱胶结层元素分布规律研究[J],2018,36(3):309-314.
APA	杨刚刚,李方林,&张雄华.(2018).新疆东戈壁钼矿弱胶结层元素分布规律研究.新疆地质,36(3),309-314.
MLA	杨刚刚,et al."新疆东戈壁钼矿弱胶结层元素分布规律研究".新疆地质 36.3(2018):309-314.