中国煤炭地质
中國煤炭地質
중국매탄지질
COAL GEOLOGY OF CHINA
2014年
10期
13-16,32
,共5页
准格尔煤田%夹矸%稀土元素%地球化学%地质意义
準格爾煤田%夾矸%稀土元素%地毬化學%地質意義
준격이매전%협안%희토원소%지구화학%지질의의
Jungar coalfield%parting%rare earth element%geochemistry%geological significance
准格尔煤田含煤岩系高岭岩资源丰富，高铝矿物来源备受关注。采用高分辨率电感耦合等离子质谱等技术对石炭-二叠系太原组6号和山西组4号煤夹矸及顶底板中的稀土元素进行分析，并探讨了其物质来源。结果表明，6号煤夹矸及顶底板中稀土元素总量（ΣREY）均值为167.69μg/g，接近上地壳ΣREY值(168.4μg/g)；4号煤夹矸及顶底板中ΣREY均值为210.22μg/g，高于上地壳的ΣREY值。4号煤夹矸及顶底板中轻稀土含量均值与6号煤相当，中稀土和重稀土含量均值为6号煤两倍以上。6号煤夹矸及顶底板分层样中δCe为0.82~0.94，δEu为0.53~0.87；4号煤中δCe为0.88~0.98，δEu为0.74~0.97；均为Ce、Eu负异常。6号煤层夹矸及顶底板稀土元素主要来源于盆地北西侧阴山地区元古界花岗岩和北东侧下古生界沉积岩。4号煤层夹矸及顶底板稀土元素物源主要为盆地北侧阴山地区下古生界和元古界的沉积岩和火成岩系。
準格爾煤田含煤巖繫高嶺巖資源豐富，高鋁礦物來源備受關註。採用高分辨率電感耦閤等離子質譜等技術對石炭-二疊繫太原組6號和山西組4號煤夾矸及頂底闆中的稀土元素進行分析，併探討瞭其物質來源。結果錶明，6號煤夾矸及頂底闆中稀土元素總量（ΣREY）均值為167.69μg/g，接近上地殼ΣREY值(168.4μg/g)；4號煤夾矸及頂底闆中ΣREY均值為210.22μg/g，高于上地殼的ΣREY值。4號煤夾矸及頂底闆中輕稀土含量均值與6號煤相噹，中稀土和重稀土含量均值為6號煤兩倍以上。6號煤夾矸及頂底闆分層樣中δCe為0.82~0.94，δEu為0.53~0.87；4號煤中δCe為0.88~0.98，δEu為0.74~0.97；均為Ce、Eu負異常。6號煤層夾矸及頂底闆稀土元素主要來源于盆地北西側陰山地區元古界花崗巖和北東側下古生界沉積巖。4號煤層夾矸及頂底闆稀土元素物源主要為盆地北側陰山地區下古生界和元古界的沉積巖和火成巖繫。
준격이매전함매암계고령암자원봉부，고려광물래원비수관주。채용고분변솔전감우합등리자질보등기술대석탄-이첩계태원조6호화산서조4호매협안급정저판중적희토원소진행분석，병탐토료기물질래원。결과표명，6호매협안급정저판중희토원소총량（ΣREY）균치위167.69μg/g，접근상지각ΣREY치(168.4μg/g)；4호매협안급정저판중ΣREY균치위210.22μg/g，고우상지각적ΣREY치。4호매협안급정저판중경희토함량균치여6호매상당，중희토화중희토함량균치위6호매량배이상。6호매협안급정저판분층양중δCe위0.82~0.94，δEu위0.53~0.87；4호매중δCe위0.88~0.98，δEu위0.74~0.97；균위Ce、Eu부이상。6호매층협안급정저판희토원소주요래원우분지북서측음산지구원고계화강암화북동측하고생계침적암。4호매층협안급정저판희토원소물원주요위분지북측음산지구하고생계화원고계적침적암화화성암계。
The kaolin resource is abundant within coal measures in the Jungar coalfield;the source of high aluminum minerals is a mat-ter of great concern. Using high resolution ICP-MS and other technologies carried out analysis of rare earth elements in coal parting, roof and floor of the Permo-Carboniferous Taiyuan Formation coal No.6 and Shanxi Formation coal No.4 and discussed their material sources. The result has shown that the mean total value of rare earth elements (ΣREY) in coal No.6 parting, roof and floor is 167.69μg/g, close to meanΣREY (168.4μg/g) in upper crust;in coal No.4 parting, roof and floor 210.22μg/g, higher than in upper crust. MeanΣREY of light rare earth elements in coal No.4 parting, roof and floor is corresponding to coal No.6; middle-weight and heavy rare earth elements in coal No.4 is above two times than in coal No.6. TheδCe in coal No.6 parting, roof and floor stratified samples is 0.82~0.94,δEu is 0.53~0.87;in coal No.4 are 0.88~0.98 and 0.74~0.97 respectively;thus the Ce and Eu are all negative anomaly. Prove-nances of rare earth elements in coal No.6 parting, roof and floor are mainly from basin northwest side Yinshan area Proterozoic granite and northeast side lower Paleozoic sedimentary rocks. Rare earth elements in coal No.4 parting, roof and floor are mainly from basin north side Yinshan area lower Paleozoic and Proterozoic sedimentary rocks and igneous rock series.
