村心伟晶岩铌钽矿床大尾坑区段地质特征及成因

Geological Characteristics and Genesis of Big Pit Zone of Cunxin Pegmatite Niobium-tantalum Deposit in Guangdong Province

村心铌钽矿床大尾坑区段为小型伟晶岩型铌钽矿,地表共圈定13条矿脉,其中1、4、8这3条矿体规模较大,矿体主要分布在区段中部、南部、西部,呈层状、似层状、不规则脉状。矿体空间位置受断裂、褶皱控制明显,与区域上的广宁岩体具有明显的成因联系。

Big pit zone of Cunxin niobium-tantalum deposit is a small-scaled pegmatite niobium-tantalum type deposit. 13 ore veins are delineated on the ground. Among them, three pieces of orebodies including No. 1, No. 4 and No. 8 are large in scale. Orebodies are mainly distributed in middle, south and west part and are stratiform, stratford or irregular veined. Spatial position of orebody is obviously controlled by faults and folds, and genesis of this zone is obviously related to regional Guangning rock mass.