山东平邑铜石金矿田成矿系列及成矿模式

Ore-froming Series and Model of Tongshi Gold Field in Pingyi, Shandong Province

摘要:

铜石金矿田主要由隐爆角砾岩型 (归来庄式 )、碳酸盐岩层状微细浸染型 (磨坊沟式 )、夕卡岩叠加型、斑岩型和蚀变岩型等多种类型的矿床 (点 )组成 ,矿种以金为主 ,伴有银、铜、铁矿化 ,构成一个较完整的成矿亚系列。成矿作用与铜石富钾碱性次火山杂岩关系密切 ,岩浆活动为矿床的形成提供了热液和热源。泰山岩群为主要矿源层 ;寒武纪朱砂洞组上灰岩段之白云质灰岩、灰质白云岩为磨坊沟式金矿的有利含矿层位 ;寒武系上部—奥陶系下部的白云质灰岩、白云岩等是归来庄式金矿的有利围岩。杂岩体构成的次火山穹窿及伴生的环形放射状构造 ,控制着矿体的分布。

Abstract:

Tongshi gold field are mainly composed of cryptoexplosive rock type (Guilaizhuang type), stratified microdisseminated carbonate rock type (Mofanggou type), multiple scarn type, porphyry type and altered rock type deposits (spot); the major mineral is gold, companied with silver, cooper and iron mineralization which formed a completed ore-forming series. Ore-forming has a close relation with Tongshi rich-potash subvolcanic and magmatic movements provided hydrothermal solution and heat source for ore-forming....