Found in the Atacama region of Chile, Valentines region of Uruguay, Kiruna, Sweden, the Pilbara, Midwest and Northern Goldfields regions in Western Australia, New South Wales in the Tallawang Region, and in the Adirondack region of New York in the United States.
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. Large deposits of magnetite are also found in the Atacama region of Chile, Valentines region of Uruguay, Kiruna, Sweden, the Pilbara, Midwest and Northern Goldfields regions in Western Australia, New South Wales in the Tallawang Region, and in the Adirondack region of New York in the United States. As magnetite-bearing igneous and sedimentary rocks form, the magnetite within them is aligned with the Earth’s magnetic field. Since this rock magnetism, called paleomagnetism, does not change after the rock forms, it provides a record of what the Earth’s magnetic field was like at the time the rock formed. Hematite is economically the most important iron ore, since it is more abundant than magnetite. Hematite typically occurs as one of two varieties; a massive red earthy form or a black specular variety that has a strong metallic luster. The latter variety may be mistaken for magnetite, but is not magnetic. Only a small amount of the magnetite on Earth is found magnetized as lodestone. Recent research has found that only a variety of magnetite with a particular crystalline structure, a mixture of magnetite and maghemite, has sufficient coercivity to remain magnetized and thus be a permanent magnet. Where Is It Found Lodestone and other magnetic iron ores often occur in igneous and metamorphic rocks found around the world. Countries of origin are the USA, Canada, India Mexico, Romania, Italy, Finland and Austria. Magnetite. Magnetite is a natural magnet! Part of a mineral group called the oxides, magnetite can usually be identified by its strong magnetism and dark color. Magnetite is often not very abundant, but it can be found in many different types of igneous, metamorphic, and sedimentary rocks. It can even be found in some meteorites. Most igneous rocks that form deep underground contain a small amount of magnetite crystals Magnetite is a ferromagnetic mineral that is in the iron oxide family. It is formed of one part wustite and one part hematite. Wustite is itself an iron oxide mineral that is found in meteorites as well as in native iron. Hematite is also a form of iron oxide and is commonly mined as the principal ore of man-made iron.  Magnetite is a very common iron oxide (Fe 3 O 4) mineral that is found in found in igneous, metamorphic and sedimentary rocks. It is the most commonly mined ore of iron. It is also the mineral with the highest iron content (72.4%). Magnetite is very easy to identify. It is one of just a few minerals that are attracted to a common magnet. It is a black, opaque, submetallic to metallic mineral with a Mohs hardness between 5 and 6.5. Small grains of magnetite occur in almost all igneous and metamorphic rocks. Magnetite is black or brownish-black with a metallic luster, has a Mohs hardness of 5–6 and a black streak. The chemical IUPAC name is iron(II,III) oxide and the common chemical name is ferrous-ferric oxide. Large deposits of magnetite are also found in the Atacama region of Chile, Valentines region of Uruguay, Kiruna, Sweden, the Pilbara, Midwest and Northern Goldfields regions in Western Australia, New South Wales in the Tallawang Region, and in the Adirondack region of New York in the United States.
https://en.wikipedia.org/wiki/Magnetite https://www.esci.umn.edu/courses/1001/minerals/magnetite.shtml http://www.kidzrocks.com/v/education/LODESTONE http://www.windows2universe.org/earth/geology/min_magnetite.html http://www.jimmausartifacts.com/magnetite-axe/ http://geology.com/minerals/magnetite.shtml https://en.wikipedia.org/wiki/Magnetite
where on earth is magnetite found