一种新类型镍矿床的发现及其意义——赞比亚西北省英特普莱斯镍矿的发现过程
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摘要
英特普莱斯镍矿为一种新类型热液硫化镍矿床,位于赞比亚西北省卡波姆坡穹窿东缘的新元古代沉积变质岩中。容矿主岩以黑色页岩为主,少量粉砂岩、碳酸岩地层。因强烈蚀变作用,容矿主岩含有大量的蓝晶石、滑石和镁绿泥石。镍硫化物呈细脉状、团斑状产出,镍矿化主要为浸染状和细脉状硫化物。镍硫化物矿物主要是镍黄铁矿、方硫镍矿、针镍矿,产于石英-蓝晶石脉及其蚀变晕中。土壤化探工作对该矿发现发挥了非常重要的作用。该矿床的发现初步揭示了卢弗里安造山带镍矿巨大的找矿前景。
The Enterprise nickel deposit represents a new style of hydrothermal nickel mineralization,which is hosted in Neoproterozoic sedimentary metamorphic rocks at the eastern edge of the Kabompo dome in the North-Western Province of Zambia.Host rocks are mainly black shale,minor siltstone and carbonate rock strata.Because of strong alteration,the host rocks contain a great quantity of kyanite,talc,and magnesian chlorite.Nickel mineralization is mainly disseminated as veinlet sulphides.Nickel sulfides occur as spotted shape in veins.Nickel sulfides are mainly bravoite,vaesite,millerite,hosted within quartz-kyanite veins and their halos.Soil geochemical prospecting work has played a key role in discovering the deposit.It is indicated that there is a great prospecting prospect of Ni deposit in the Lufilian orogenic belt for the discovery.
The Enterprise nickel deposit represents a new style of hydrothermal nickel mineralization,which is hosted in Neoproterozoic sedimentary metamorphic rocks at the eastern edge of the Kabompo dome in the North-Western Province of Zambia.Host rocks are mainly black shale,minor siltstone and carbonate rock strata.Because of strong alteration,the host rocks contain a great quantity of kyanite,talc,and magnesian chlorite.Nickel mineralization is mainly disseminated as veinlet sulphides.Nickel sulfides occur as spotted shape in veins.Nickel sulfides are mainly bravoite,vaesite,millerite,hosted within quartz-kyanite veins and their halos.Soil geochemical prospecting work has played a key role in discovering the deposit.It is indicated that there is a great prospecting prospect of Ni deposit in the Lufilian orogenic belt for the discovery.
引文
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[2]赞比亚矿产资源及矿业开发前景分析[R/OL].道客巴巴,(2014-03-27)[2017-07-25].http://www.doc88.com/p-8059033601515.html.
[3]赞比亚矿业投资指南[R/OL].全球矿产资源网,(2010-07-19)[2017-07-25].http://www.worldmr.net/Industry/IndustryList/Info/2010-07-19/65400.shtml.
[4]赞比亚矿产资源状况[J].现代矿业,2009,18(10):137-138.
[5]鲍荣华,武建稳.赞比亚矿业勘探开发得到较大发展[J].国土资源情报,2011(5):31-35.
[6]CAPISTRANT P L,HITZMAN M W,KELLY N,et al.Geology of the Enterprise hydrothermal nickel deposit,North-Western Province,Zambia[J].Economic Geology,2015,110:9-38.
[7]中国矿床编委会.中国矿床[M].北京:地质出版社,1994.
[8]陈浩琉,等.镍矿床[M].北京:地质出版社,1993.
[9]全球镍矿资源分布情况[R/OL].长江有色金属网,(2017-05-31)[2017-07-25].http://www.ccmn.cn/news/ff8080815b577a1b015c5dabc17a1d1b.html.
[10]KEAYS R R,JOWITT S M.The Avebury Ni deposit,Tasmania:a case study of an unconventional nickel deposit[J].Ore Geology Reviews,2013,52:4-17.