【摘要】 邯邢式铁矿为我国一重要铁矿类型,对于邯邢式铁矿的成因存在两种看法,即碱交代成因观点和矽卡岩成因观点。本工作证明碱交代和矽卡岩化是岩浆演化至残浆和热液阶段同一化学过程的两种表现,岩浆向富钠同时向富铁方向演化,碱交代和矽卡岩化促使铁质富集,铁质沉积由含矿热液由酸性条件向碱性条件变化和全封闭条件向开放条件转化两种原因引起,同位素及包裹体温度测定都表明碱交代和矽卡岩化始于岩浆阶段晚期。更多还原

【Abstract】 There are two opinions,alkali metasomatism and skarnization on the Han-xing iron ore formation in China.This work proves alkali metasomatism and skarnization are the two outcomes of one chemistry reaction.The magma develops to the Na and Fe rich directions and the alkali metasomatism and skarnization accumulate the Fe content in the residual magma and the hydro-thermo fluid.The iron ore is deposited when the residual magma and the hydro-thermo fluid change from acid to alkalic and the environment changes from close to open.The alkali metasomatism and skarnization begin in the later magma stage.更多还原