CAJ | 학술논문

维摩寺沉积改造型铅锌银矿床位于秦岭褶皱系北部“裂陷槽”内。矿区新元古界陶湾群，岩性主要为结晶灰岩、白云质结晶灰岩，次为绢云母石英片岩；主要矿体赋存于陶湾群缓结晶灰岩倾斜岩层中，特点是厚而偏贫。矿体形态为豆荚状、透镜状；陶湾群部分地层本身既是矿源层又是矿体；由于矿源层于是碳酸盐岩系列岩石，其矿物颗粒间受区域变质作用发生重结晶而使孔隙明显增大，加上众多细小的岩溶孔隙，使得后期含矿热卤水的运动通道通畅，对矿源层的有用元素进行渗透、淬取、溶解，最后冷却、充填、沉淀在矿源层中形成矿床。
유마사침적개조형연자은광상위우진령습추계북부“렬함조”내。광구신원고계도만군，암성주요위결정회암、백운질결정회암，차위견운모석영편암；주요광체부존우도만군완결정회암경사암층중，특점시후이편빈。광체형태위두협상、투경상；도만군부분지층본신기시광원층우시광체；유우광원층우시탄산염암계렬암석，기광물과립간수구역변질작용발생중결정이사공극명현증대，가상음다세소적암용공극，사득후기함광열서수적운동통도통창，대광원층적유용원소진행삼투、쉬취、용해，최후냉각、충전、침정재광원층중형성광상。
Weimosi sedimentary-reworked Pb-Zn-Ag deposit is located in the “chasmic trough”of northern Qinling fold system.This mining area belongs to Taowan Group of Neoproterozoic era,and the lithology is mainly crystalline limestone and dolomitic crystalline limestone,with lesser sericite-quartz schist.The main ore bodies occur in the gently inclined crystalline limestone strata of Taowan Group,and are characterized by thick width and relatively low grade.The orebodies occur as pod or lenticular in form.Some strata of Taow-an Group are both the source beds and the orebodies.The source beds are rocks of carbonate series,and the pore size increases significantly because the mineral particles suffer from the recrystallization resulted from regional metamorphism.With numerous small karst pores,ore-bearing hot brine thus is provided with unob-structed movement channels in the later period,and finally forms the deposits in the source beds through its effects of permeating,extracting and dissolving as well as cooling-down,filling-in and precipitating on useful elements in the source beds.