Magnets come from an ore, magnetite, which can be found in different types of Earth's rocks. The rocks are called igneous, hydrothermal veins and metamorphic.Know More
Magnetite, a black mineral, contains both ferric and ferrous ions, making it a good source of iron. Examples of igneous rocks that contain magnetite are amphiboles and biotite. Limestone is an example of metamorphic rock that contains magnetite. Hydrothermal veins like galena and pyrrhotite contain magnetite too. In the U.S, Wisconsin's Gogebic Range and Black River Falls are rich in magnetite.
Magnets can also be man-made. They are made of alloys or metals like iron. Though there has not been any concrete proof, yet magnets are advertised as pain management products.Learn more in Magnetism
Sedimentary rocks come from the fragments of pre-existing rocks called sediments. There are three types of sedimentary rocks, each coming from different kinds of sediments. Clastic sedimentary rocks are created from the broken pieces of other rocks, while chemical sedimentary rocks form from mineral crystals like halite and gypsum.Full Answer >
Cobalt is a ferromagnetic metal element. Commercially, it is combined with nickel and aluminum to produce an alloy called alnico, which is used to construct strong permanent magnets. Cobalt maintains its ferromagnetic properties up to 2,012 degrees Fahrenheit, which is greater than other materials, such as samarium cobalt.Full Answer >
The like ends of two magnets repel each other, such that a north pole on one magnet will repel a north pole on a second magnet. The same is true of two south poles on magnets.Full Answer >
Metals that are attracted to magnets include iron, nickel and cobalt. The majority of metals are not attracted to magnets, including copper, silver, gold, magnesium, platinum and aluminum. However, the metals that are not attracted to magnets may magnetize slightly when placed in a magnetic field.Full Answer >