Calcium

From Conservapedia

Calcium
Name	Calcium
Symbol	Ca
Atomic number	20
Atomic mass	40.1 amu
Classification	Standard metal
Crystal structure	Cubic
Color	Silver
Date of discovery	1808
Name of discoverer	Sir Humphrey Davy
Name origin	From the Latin calcis.
Uses	Calcium is one of the primary elements in bones, shells, etc. Taking calcium internally can promote bone growth.
Obtained from	Chalk, limestone, marble, vitamin to promote bone growth.

Calcium is a very important element to human physiology, as calcium-phosphate salts form the basis for the creation of bones. It is also a critical cellular component in all organisms, and in animals serves roles of particular importance in blood, the cardiovascular system, and the nervous system. Consuming too much calcium can lead to kidney stones, which are typically composed of calcium deposits.

Calcium in its pure form is referred to as "the white element" and is kept sealed in underground chambers due to the hazards involved in its handling.