安徽地质
安徽地質
안휘지질
GEOLOGY OF ANHUI
2014年
4期
255-259
,共5页
铀成矿地质特征%地球化学特征%石英正长岩%潜火山岩型铀矿床%庐枞火山盆地
鈾成礦地質特徵%地毬化學特徵%石英正長巖%潛火山巖型鈾礦床%廬樅火山盆地
유성광지질특정%지구화학특정%석영정장암%잠화산암형유광상%려종화산분지
geological features of uranium ore formation%geochemical features%quartz syenite%subvolcanic uranium ore deposit%Lu-Zong volcanic basin
在收集整理前人成果基础上,着重分析了庐枞盆地铀成矿地质特征及地球化学特征。盆地内铀矿化与石英正长岩具密切时空关联,石英正长岩是与火山岩同源并有时空联系的潜火山岩;潜火山岩外带砂岩层间破碎带和贯通潜火山岩与砂岩的断裂及其旁侧裂隙密集带构造是主要控矿构造,隐爆角砾岩构造亦控矿;与铀矿物伴生的金属矿物为中低温热液矿床标型矿物,铀矿石伴生元素及矿床内普遍而强烈发育的硅化,与潜火山岩型金属矿床特征相似。认为火山盆地内铀矿床类型应归属于潜火山岩型矿床,并进而对今后的铀矿勘查工作提出了建议。
在收集整理前人成果基礎上,著重分析瞭廬樅盆地鈾成礦地質特徵及地毬化學特徵。盆地內鈾礦化與石英正長巖具密切時空關聯,石英正長巖是與火山巖同源併有時空聯繫的潛火山巖;潛火山巖外帶砂巖層間破碎帶和貫通潛火山巖與砂巖的斷裂及其徬側裂隙密集帶構造是主要控礦構造,隱爆角礫巖構造亦控礦;與鈾礦物伴生的金屬礦物為中低溫熱液礦床標型礦物,鈾礦石伴生元素及礦床內普遍而彊烈髮育的硅化,與潛火山巖型金屬礦床特徵相似。認為火山盆地內鈾礦床類型應歸屬于潛火山巖型礦床,併進而對今後的鈾礦勘查工作提齣瞭建議。
재수집정리전인성과기출상,착중분석료려종분지유성광지질특정급지구화학특정。분지내유광화여석영정장암구밀절시공관련,석영정장암시여화산암동원병유시공련계적잠화산암;잠화산암외대사암층간파쇄대화관통잠화산암여사암적단렬급기방측렬극밀집대구조시주요공광구조,은폭각력암구조역공광;여유광물반생적금속광물위중저온열액광상표형광물,유광석반생원소급광상내보편이강렬발육적규화,여잠화산암형금속광상특정상사。인위화산분지내유광상류형응귀속우잠화산암형광상,병진이대금후적유광감사공작제출료건의。
On the basis of collecting and sorting out previous work results, this paper focused on analysis of geological and geochemical features of uranium ore formation in the Lu-Zong basin. Uranium mineralization is closely related to quartz syenite in time and space in the basin, and the syenite has the same source as that of volcanic rock, and is rather subvolcanic rock. The sandstone interlayer fracture zone in the outer subvolcanic rock, the fault cutting through subvolcanic rock and sandstone and the flanking fracture cluster are major ore-control structures as well as cryptoexplosive breccia structure. Metallic minerals associated with uranium mineral are guide minerals of medium-low-temperature hydrothermal ore deposit. Elements associated with uranium ore along with widespread development of silication are similar to the features of subvolcanic metallic ore deposit. The uranium ore deposit in the volcanic rock basin should be of subvolcanic type, and a suggestion is given for uranium ore exploration in the future.