人们普遍认为，具有如此高镁含量的火山岩是不可能存在的。
It was generally accepted that volcanic rocks with such high levels of magnesium could not exist.
原生岩浆是高镁拉斑玄武岩浆。
高镁矿物粉尘溶解速率在第一阶段多出现峰值；
Most of the dissolving rates of high_magnesium mineral dusts display peaks in the first dissolving stage.
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