采用X射线衍射表征玄武岩经熔融硝酸盐浸蚀后的物相变化,分析玄武岩质量随浸蚀次数的变化规律,并利用电子探针测定硝酸盐的渗入深度.结果表明:玄武岩未与硝酸盐发生反应,但硝酸盐能促进玄武岩中的蛇纹石转变为橄榄石；随着浸蚀次数的增加,玄武岩的质量增长率先增加后减小；60次浸蚀循环后,硝酸盐的渗入深度为350～450 μm.
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