Naturally Magnetic Lodestone (Magnetite), Rocks & Minerals: Educational Innovations, Inc.
Principle Navigation - "LODESTONE" Lodestone, is a naturally magnetized piece of the mineral magnetite. They are naturally-occurring magnets, which can attract iron. The property of magnetism was first discovered in antiquity through
Lodestone (with Magnet) – Sloan Museum & Longway Planetarium
Early illustration of field lines from a piece of lodestone (magnetite)... | Download Scientific Diagram
Magnetism: History of the Magnet Dates Back to 600 BC | MPI