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All of the mineralised bones shown in image 5 easily pulled a rare earth magnet. but when i attempted to do the same using a none rare earth magnet of the same shape and size, the bone did not pull the magnet.
All of the mineralised bones shown in image 5 easily pulled a rare earth magnet. but when i attempted to do the same using a none rare earth magnet of the same shape and size, the bone did not pull the magnet.