胶莱盆地陆源碎屑层控金矿床矿石特征研究

产于胶莱盆地内由富Au和C有机岩石组成的含矿系中的金矿床，其含矿层位为下白垩统莱阳群一套含碳陆相碎屑岩系，它控制了蓬家夼，宋家沟式金矿的展布。对两类金矿床矿石特征进行了研究及对比，它们具有相同或相似的矿物共生组合（黄铁矿－方铅矿－闪锌矿－黄铜矿－赤铁矿，自然金）及成矿元素共生组合（Au-Cu-Pb-Zn-Fe)，成矿作用均具有多期，多阶段特征，均为受胶莱盆地形成初期富Au和C有机矿源层控制，后经构造－岩浆热液及地下热液作用的沉积改造型金矿床。

Study on features of ores in the terrigenous clastic stratabound gold deposit of the Jiaolai basin

The gold deposits occured in ore bearing system which are composed of gold rich and organic carbon rich rocks in the Jiaolai basin.Their ore bearing straum belongs to carbonaceous terrigenous clastic rock series developed at the bottom of Cretaceous Laiyang group,which controls the distribution of the Pengjiakuang type and Songjiagou type gold deposits.According to the study of ore features and the contrast between the two types of gold deposits,we find that they have same or similiar paragenetic association of minerals(pyrite galena sphalerite chalcopyrite hematite native gold),paragenetic association of ore forming elements(Au Cu Pb Zn Fe),and multiperiodic and multistage mineralization,and both of them belong to the sedimentary deformating type gold deposits which are firstly controlled by gold rich and organic carbon rich source bed in early age of formation of the Jiaolai basin,later influenced by the tectonic magmatic hydrothermal activity and underground thermal activity.