Many people 'coaching' have no idea what coaching is as they haven't been trained or haven't been coached by a professionally trained and credentialed coach. There are 'schools' that will offer a credential after three hours of training and people read a book or watch a TV program and decide 'I'm a coach!'.
The most magnetic and common type is a lodestone. It consists of a brownish-black mineral called magnetite. Lodestones are natural compasses: Suspend one by a thread or wire and it will rotate until its magnetic field is aligned with Earthâs magnetic field. A magnetic field is the area around a material in which its magnetic forces can be detected.
Magnetite is a mineral, one of the three common naturally occurring iron oxides (chemical formula Fe3O4) and a member of the spinel group. Magnetite is the most magnetic of all the naturally occurring minerals on Earth. Naturally magnetized pieces of magnetite, called lodestone, will attract small pieces of iron, and this was how ancient people first noticed the property of magnetism. Small grains of magnetite occur in almost all igneous and metamorphic rocks.