Though magnesium is abundant on the earth, it's never found in a free state. It's considered a structural metal, which means it can be used as a building material. However, its melting point is too low for it to be unalloyed with other metals. The melting point of magnesium is only 1202 degrees Fahrenheit.
As a nutrient, magnesium is essential for health. It supports the functioning of the heart, nerves, muscles and immune system.Learn more about Geology