镁铁矿是磁铁矿系列中的一种矿物，为镁铁氧化物矿物。
理论研究表明欲提取硼镁铁矿中的硼，直接焙烧硼镁铁矿，然后浸出是相当困难的。
Results show that it is rather difficult to extract boron from ludwigite if roasting direct the ludwigite and then leaching.
一种硬而软的元素可锻造抗腐蚀用于合金中见于硫镍铁矿砷钴矿硅镁镍矿针镍矿中。
A hard malleable ductile silvery element that is resistant to corrosion used in alloys occurs in pentlandite and smaltite and garnierite and millerite.
碳酸盐岩中自生碳酸盐矿物主要为文石、高镁方解石，少量白云石、铁白云石和菱铁矿。
X-ray studies show that carbonate minerals are aragonite, high-Mg calcite, and lesser dolomite, ankerite and siderite.
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