新疆和田县白龙山超大型伟晶岩型锂铷多金属矿床的发现及其意义

发布时间：2019-01-05 03:55

【摘要】：西昆仑-喀喇昆仑位于特提斯构造域北缘,该地区通过多年的基础地质调查和找矿勘查,已在铁矿、铅锌矿、锰矿等找矿方面实现了重大突破。项目组最近三年通过多次野外勘查、系统取样与室内化验分析,确认在新疆和田县喀喇昆仑腹地白龙山新发现了一处超大型锂铷多金属矿床。该矿床为花岗伟晶岩型,目前已确定含矿伟晶岩墙规模为长度3750 m,宽度46~165 m,其中I号矿带由3个巨大矿体组成,长990~1230 m,厚61.86~115.85 m,走向110°~120°,倾角65°~80°。3个主矿体Li_2O平均品位1.26%~1.60%,Rb_2O平均品位0.10%~0.12%,估算334资源量Li_2O为345.7647万吨,Rb_2O为17.682万吨,达到超大型规模,有望成为一个世界级规模的巨型锂矿床。白龙山超大型锂铷多金属矿床的发现,为整个西昆仑-喀喇昆仑地区稀有金属矿产找矿实现了重大突破,对喀喇昆仑锂稀有金属成矿带的确立奠定了坚实的基础,使该地区有望成为我国一个新的重要的锂资源基地。
[Abstract]:West Kunlun Karakoram is located in the northern margin of Tethys tectonic domain. Through many years of basic geological investigation and prospecting, great breakthroughs have been made in ore prospecting such as iron ore, lead-zinc deposit and manganese deposit. In the last three years, through many field surveys, systematic sampling and laboratory analysis, the project team confirmed the discovery of a super large lithium rubidium polymetallic deposit in Bailongshan, the hinterland of Karakoram, Xinjiang. The ore deposit is of granitic pegmatite type. At present, it has been determined that the scale of pegmatite dike is 3750 m in length and 46 ~ 165m in width. The ore belt I is composed of three giant orebodies, the length is 990 ~ 1230 m, the thickness is 61.86 ~ 115.85 m, and the strike is 110 掳~ 120 掳. The average grade of Li_2O of the three main orebodies is 1.26 and 1.60 respectively. The average grade of Rb2 O is 0.10 and 0.12. The estimated resource Li_2O is 3.457647 million tons and the Rb_2O is 176820 tons. It is expected to become a world-class-scale giant lithium deposit. The discovery of the super-large lithium rubidium polymetallic deposit in Bailongshan has made a great breakthrough for the prospecting of rare metal minerals in the whole West Kunlun Karakoram area and laid a solid foundation for the establishment of the Karakoram lithium rare metal metallogenic belt. This area is expected to become a new important lithium resource base in China.
【作者单位】：中国科学院广州地球化学研究所;中国科学院大学;新疆国家305项目办公室;
【基金】：国家十二五科技支撑项目“新疆南部三地州优势矿产预测评价关键技术研究”子课题“黑恰-大红柳滩铁铅锌多金属成矿条件与找矿远景预测”(2015BAB05B03) 中国科学院广州地球化学研究所135项目“青藏高原中北部新生代板内造山与成矿”(135TP201601)联合资助
【分类号】：P618.2

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