20
Ca
Calcium
alkaline
Discovered : Humphry Davy, 1808.
Found in : Calcite, aragonite, fluorite, gypsum, apatite.
Used for : Cement, plaster, bones and teeth, steel production.
Remarkable : The fifth most abundant element in the Earth's crust. The calcium in your skeleton was forged in the heart of an ancient star.
Minerals containing Calcium
