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。
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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