A survey made with a magnetometer carried on an airplane. A magnetometer measures the earth s magnetic field and its changes.
Rocks containing larger amounts of magnetic minerals register a higher response on the magnetometer.
A group name for a number of pyroxene minerals that have similar crystal forms. They are silicates commonly containing aluminum, magnesium, calcium, and iron in their crystal structures. Pyrope is a silicate mineral containing magnesium and aluminum in its structure. An opaque, black mineral containing iron and titanium. Naturally occurring molten rock material, generated within the earth and capable of being intruded into other rocks or extruded onto the surface of the earth.