How Do We Get It? – Calcium.The Origin of Calcium and its Commercial Extraction.Calcium, symbolized by the atomic number 20 and the chemical symbol Ca, is an essential element for all living organisms. It is an abundant metal that plays a vital role in various biological processes, such as maintaining strong bones and teeth, regulating muscle contractions, and supporting nerve function. But what is the origin of calcium, and how is it commercially extracted and processed? Let’s uncover the fascinating story behind this indispensable element.