新疆大红柳滩地区俘虏沟花岗伟晶岩成矿特征

Metallogenic Characteristics of Granitic Pegmatite in the Region of Fulugou,Dahongliutan,Xinjiang

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,已发现多处铁矿、铅锌矿、锰矿矿床。通过详细野外地质调查在新疆喀剌昆仑和田县俘虏沟地区发现一处中型锂铷稀有金属矿床。该矿床属于花岗伟晶岩型,脉体倾向北东30°～50°或西南204°～240°,倾角39°～78°,矿体规模最大者宽7～8 m,北西-南东向延伸1.2 km。Li_2O平均品位1.1%～3.3%,Rb_2O平均伴生品位为0.04%～0.12%,估算资源量(334)Li_2O为8.68×10~4t,Rb_2O为1.7×10~3t,达到中型锂铷多金属矿床规模。俘虏沟地区中型锂铷多金属矿床的发现,表明在该区域具有形成稀有金属矿产的潜力。

The west Kunlun-Karakorum Orogenic Belt is located in the northern most part of the Tibet Plateau.Great progresses have been made in metallogenic study and prospecting of iron,lead,zinc,and manganese ore deposits in the last few years.A medium-sized lithium-rubidium rare metal deposit has been discovered in the Fulugou area of Hetian county by detailed field geological survey.The deposit belongs to the granitic pegmatite type.The vein body tends to be 30°~50°in the northeast or 204°~240°in the southwest,and the dip angle is 39°~78°.The largest size of the ore body is about 7~8 m,and the north west-southeast extends to 1.2 km.The average grade of Li2 O is 1.1%~3.3%,and the average associated grade of Rb2 O is 0.04%~0.12%.The estimated resources(334)Li2 O is 8.68×10^4 t and Rb2 O is 1.7×10^3 t,has reached the scale of medium lithium rubidium polymetallic deposit.The discovery of medium-sized lithium rubidium polymetallic deposits in Fulugou area,which has indicated the potential of forming rare metal minerals in the area.