Natural magnets are minerals or metals that generate a stable magnetic field without artificial inducement. They are different from artificial magnets, which are manufactured by humans. All natural magnets are permanent, although artificial magnets can be either permanent or temporary.Know More
Many minerals found in nature are naturally magnetic. All normal matter is slightly negatively charged on its surface as a result of the presence of electrons. When these electrons move chaotically, the result is that their slight negative charge is spread out and doesn't demonstrate any clear direction. Such a field is very weak and doesn't generate a detectable magnetic attraction.
Some minerals, such as lodestone, arrange the flow of electrons in a more orderly way. As electrons flow in a general direction, they generate a magnetic field. The greater the proportion of electrons flowing in a uniform direction, the stronger the magnetic field gets.
Lodestone is one of the most efficient natural magnets. It is a black mineral that is rich in magnetite. Magnetite is rich in oxidized iron, and iron generally permits the free flow of electrons through it. This makes magnetite such a powerful magnet that in some animals, such as pigeons, it is incorporated into their brains as an aid to sensing the earth's magnetic field.Learn more about Geology
Minerals are formed under a variety of conditions, including when molten materials cool, when liquids evaporate or cool and under high temperatures and pressures. Minerals are found in the earth's crust and mantle, and many were created when feldspar and quartz reacted with other materials during the formation of the planet.Full Answer >
Rocks are different from minerals in that minerals are single crystalline accumulations of one or more elements, while rocks are solid accumulations of one or more minerals. Rock can either refer to a particular, detached object or, in a general sense, as a synonym for stone, generally referring to a portion of the substance. Individual minerals can be obvious in rocks, as with granite, or microscopic, as with many basalts.Full Answer >
Minerals are most commonly classified by the Dana system. Minerals are identified according to hardness, specific gravity, color, luster, streak, cleavage and crystal form.Full Answer >
Some important characteristics of minerals are color, hardness, streak, cleavage, fracture and luster. These characteristics do not require any complicated equipment to determine and are useful in identifying specific minerals.Full Answer >