The angular, black magnetite—the most common naturally occurring magnetic material on earth—is always black, however, and is frequently found near garnet.

那些有棱角的，黑色的磁铁矿一般都是黑色的，这种矿石是地球上最为常见的磁性矿石。

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The mineral phase of pigments is mainly magnetite, the decorative pattern of which is of black color.

釉下彩样品的色层物相都是以磁铁矿为主，花纹呈黑色。

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Black Iron Oxide (Magnetite) Black Iron Oxide is found useful, especially in semi-metallic formulas as an agent for elevating cold friction.

黑的铁氧化物(磁铁矿)：黑的铁氧化物发现有用的，特别在半金属的配方作为提高冷的摩擦力。在半金属的配方的通用的成分。

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The black rock was later named as magnetite, perhaps after Magnesia or magnes and further work by Greek and Chinese gave emergence to magnet.

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