福建南平芹山透辉石矿床地质特征及成因探讨

芹山透辉石矿产于前震旦系龙北溪组的变质岩中，矿体为层状，与围岩呈整合接触。矿石主要由透辉石、方解石和石英等组成．矿床的地质学及矿物学研究表明，该矿床是由区域变质作用形成的。但方镁石、硅灰石等矿物的存在和矿石结构构造的特点，表明矿床的形成还存在接触变质作用，矿床成因应属于区域变质－接触变质复合类型。

Geologe and Genesis of Qinshan Diopside Deposit, Nanping,Fujian Province

Qinshan diopside deposit occurs in a suite of metamorphic rock of longbeixi.Ore bodies are layered and contacted by country rocks conformably.They are mainly composed of diopside,calcite and quartz. Geological and mineralogical studies on the deposite indicate that they formed through reginal metamorphism.Esistence of periclasite and wollastonite and the feature of the texture and structure of ores indicate existence of contact metamorphism in formation of the deposit.The genesis of the deposit belongs to regional metamorphism a compound type of contact metamorphism.