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loadstone: see magnetite.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

More on loadstone from Infoplease:

  • magnetite - magnetite magnetite , lustrous black, magnetic mineral, Fe3O4. It occurs in crystals of the cubic ...
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  • Magnet - Magnet The loadstone; so called from Magnesia, in Lydia, where the ore was said to abound. The ...

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