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Magnetite, also known as lodestones, were not first discovered in Greece, but is considered to predate historical records. They were used in China for feng shui in the 2nd and 3rd millenium BC and by the Olmec in Mexico between 1400-1000 BC.

The first written account of lodestones in Greek culture was by 6th century BC Thales of Miletus, who is credited for discovering its properties. The term "magnetic" stems from Magnesia, Greece, where his lodestones may have originated.

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Where was gypsum discovered?

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