Examinations of several thousand thin sections revealed a few examples of unaltered ferromagnesian and sulfide minerals.经过对数千薄片的研究发现了少数未变化的铁镁和硫化物矿的实例....

ferromagnesian的音标：ferromagnesian的英式发音音标为：[ˌferəʊmæg'ni:ʃən]ferromagnesian的美式发音音标为：[ˌferoʊmæg'niʃən]...

n.铁镁矿物adj.含有铁与镁的...