Magnetic Method
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The Earth's magnetic field is a giant web of electrical current that is the result of the molten outer core circulating at thousands of miles per hour. Everything interacts with the Earth's magnetic field, including mineral deposits.
Magnetic susceptibility, k, is an object's measurable interaction with the magnetic field. It is the ratio M/H, where M is the objects magnetic moment per unit volume and H is the magnetic field strength.
Minerals that have an unusually high magnetic susceptibility are Fe, Ni, Co, and nickel sulfides. By using an instrument called a magnetometer and dangling it from a helicopter, large areas of land can be prospected by looking for anomalous readings.
Magnetic susceptibility, k, is an object's measurable interaction with the magnetic field. It is the ratio M/H, where M is the objects magnetic moment per unit volume and H is the magnetic field strength.
Minerals that have an unusually high magnetic susceptibility are Fe, Ni, Co, and nickel sulfides. By using an instrument called a magnetometer and dangling it from a helicopter, large areas of land can be prospected by looking for anomalous readings.