First Uses of the Periodic Table Element – Calcium

First Uses of the Periodic Table Element - Calcium. Calcium: From Pioneering Uses to Discontinued Applications. Calcium, an essential mineral for life, has a long history of human use, dating back thousands of years. Its versatile properties have made it valuable for various purposes throughout history. However, in recent years, calcium has seen a shift in focus with a decline in its once-prominent uses. In this article, we explore the first applications of calcium and why it is no longer extensively employed for those purposes.