光谱学与光谱分析
光譜學與光譜分析
광보학여광보분석
SPECTROSCOPY AND SPECTRAL ANALYSIS
2014年
8期
2268-2272
,共5页
拜仁达坝矿区%蚀变矿物%近红外光谱%X射线衍射%土壤
拜仁達壩礦區%蝕變礦物%近紅外光譜%X射線衍射%土壤
배인체패광구%식변광물%근홍외광보%X사선연사%토양
Bairendaba deposit%Alteration mineral%Near infrared spectrum (NIR)%X-ray diffraction (XRD)%Soil
在内蒙古草原拜仁达坝矿区上部的地表覆盖层中均匀采集土壤样品,用X射线衍射和近红外光谱技术对样品进行分析测试,旨在探讨草原矿区土壤成分来源及其与地下岩体的关系。结果表明,该土壤样品主要由石英、石墨、碳酸盐、角闪石、云母、绿泥石、蒙脱石、伊利石、块磷铝矿、硬水铝石、蓝铜矿、赤铁矿等组成,说明了地表土壤成分不仅来源于地表岩体风化产物,与地下岩体及其围岩蚀变作用更加密切相关。土壤中所含蓝铜矿和赤铁矿主要来源于矿体氧化带,可作为找矿标志;蚀变矿物组合主要为绿泥石-伊利石-蒙脱石,推测该区域大致经历了钾化→硅化、碳酸盐化→绢云英岩化→泥化的蚀变过程。通过分析蚀变矿物组合,可以还原围岩蚀变及物理风化过程,为深部找矿以及矿床成因研究提供了重要的参考信息,提高了找矿的成功率。X射线衍射和近红外光谱技术用于矿物、矿床研究方面,有着经济、快速的特点,能很好的鉴定矿区地表土壤中的矿物成分。尤其是近红外光谱分析技术对样品要求低,可以对样品进行快速批量的分析,具有其独特的优越性。随着近红外技术的发展,其在地质领域中将有越来越广泛的应用,并且能在找矿勘探中发挥重要的作用。
在內矇古草原拜仁達壩礦區上部的地錶覆蓋層中均勻採集土壤樣品,用X射線衍射和近紅外光譜技術對樣品進行分析測試,旨在探討草原礦區土壤成分來源及其與地下巖體的關繫。結果錶明,該土壤樣品主要由石英、石墨、碳痠鹽、角閃石、雲母、綠泥石、矇脫石、伊利石、塊燐鋁礦、硬水鋁石、藍銅礦、赤鐵礦等組成,說明瞭地錶土壤成分不僅來源于地錶巖體風化產物,與地下巖體及其圍巖蝕變作用更加密切相關。土壤中所含藍銅礦和赤鐵礦主要來源于礦體氧化帶,可作為找礦標誌;蝕變礦物組閤主要為綠泥石-伊利石-矇脫石,推測該區域大緻經歷瞭鉀化→硅化、碳痠鹽化→絹雲英巖化→泥化的蝕變過程。通過分析蝕變礦物組閤,可以還原圍巖蝕變及物理風化過程,為深部找礦以及礦床成因研究提供瞭重要的參攷信息,提高瞭找礦的成功率。X射線衍射和近紅外光譜技術用于礦物、礦床研究方麵,有著經濟、快速的特點,能很好的鑒定礦區地錶土壤中的礦物成分。尤其是近紅外光譜分析技術對樣品要求低,可以對樣品進行快速批量的分析,具有其獨特的優越性。隨著近紅外技術的髮展,其在地質領域中將有越來越廣汎的應用,併且能在找礦勘探中髮揮重要的作用。
재내몽고초원배인체패광구상부적지표복개층중균균채집토양양품,용X사선연사화근홍외광보기술대양품진행분석측시,지재탐토초원광구토양성분래원급기여지하암체적관계。결과표명,해토양양품주요유석영、석묵、탄산염、각섬석、운모、록니석、몽탈석、이리석、괴린려광、경수려석、람동광、적철광등조성,설명료지표토양성분불부래원우지표암체풍화산물,여지하암체급기위암식변작용경가밀절상관。토양중소함람동광화적철광주요래원우광체양화대,가작위조광표지;식변광물조합주요위록니석-이리석-몽탈석,추측해구역대치경력료갑화→규화、탄산염화→견운영암화→니화적식변과정。통과분석식변광물조합,가이환원위암식변급물리풍화과정,위심부조광이급광상성인연구제공료중요적삼고신식,제고료조광적성공솔。X사선연사화근홍외광보기술용우광물、광상연구방면,유착경제、쾌속적특점,능흔호적감정광구지표토양중적광물성분。우기시근홍외광보분석기술대양품요구저,가이대양품진행쾌속비량적분석,구유기독특적우월성。수착근홍외기술적발전,기재지질영역중장유월래월엄범적응용,병차능재조광감탐중발휘중요적작용。
The soil samples uniformly overlying the Bairendaba deposit of the Inner Mongolia grassland were collected,and ana-lyzed with X-ray diffraction (XRD)and near infrared spectrum (NIR),for exploring the origins of the soil from the grassland mining area and the relationship with the underground rock.The results show that the samples consist of quartz,graphite,car-bonate,hornblende,mica,chlorite,montmorillonite,illite,berlinite,diaspore,azurite,hematite,etc.These indicate that the soil samples were not only from the weathering products of the surface rock,but also from the underground rock mass and the alteration of the wall rock.The azurite and the hematite contained in the soil,mainly coming from the oxidation zone of the ore-bodies,can be used as the prospecting marks.The alteration mineral assemblage is mainly chlorite-illite-montmorillonite and it experienced the alteration process of potassic alteration→silicification→carbonatization→silk greisenization→clayization.Also, the wall rock alteration and the physical weathering processes can be accurately restored by analyzing the combination of the al-teration minerals,which can provide important reference information for the deep ore prospecting and the ore deposit genesis study,improving the rate of the prospecting.The XRD and NIR with the characteristics of the economy and quickness can be used for the identification of mineral composition of soil,and in the study of mineral and mineral deposits.Especially,NIR has its unique superiority,that is,its sample request is low,and it can analyze a batch of samples quickly.With the development of INR,it will be more and more widely applied in geological field,and can play an important role in the ore exploration.