Flashing LED Circuit DIY Electronics Kit
(Anglo-Saxon, iron; L. ferrum) Iron was used prehistorically:
Iron is a relatively abundant element in the universe. It is found in the sun and manytypes of stars in considerable quantity. Its nuclei are very stable. Iron is a principalcomponent of a meteorite class known as siderites and is a minor constituent of theother two meteorite classes. The core of the earth -- 2150 miles in radius -- is thoughtto be largely composed of iron with about 10 percent occluded hydrogen. The metal is thefourth most abundant element, by weight that makes up the crust of the earth.
The most common ore is hematite, which is frequently seen as black sands along beachesand banks of streams.