新泰市宫官银矿床地质特征及找矿方向探析

Primary Analysis on Geological Characteristics and Prospecting Direction of Gongguan Silver Deposit in Xintai City

宫官地区位于鲁西地块新甫山凸起内。区域地层有泰山岩群雁翎关组和山草峪组,古生代长清群、九龙群;断裂构造和韧性剪切构造发育,构造均具多期活动,尤以燕山晚期最为强烈;太古代、古生代、中生代岩浆岩发育。简要叙述了银矿床的分布、规模、厚度、矿石品位变化等特征,说明了该区银成矿地质条件较好,浅析了今后的找矿方向。

Gongguan area locates in Xinfushan uplift in Luxi block.Regional strata include Yanlingguan for-mation and Shancaoyu formation of Taishan group,Paleozoic Changqing group and Kowloon group.Its fault structures and ductile shear belts developed well with multi stage events,and especially strong in the late period of Yanshan formation.Magmatic rocks in Archean,Paleozoic and Mesozoic periods devel-oped well.Distribution,size,thickness,changes in ore grade and other characteristics of silver deposits have been briefly introduced.It is indicated that geological conditions of silver mineralization in the area are better,and prospecting direction in the future has been analyzed as well.