Zechstein Source presents information on Zechstein Inside magnesium chloride, which is sourced from unique and pure deposits that were formed over 250 million years ago when the Zechstein Sea evaporated and flooded in cycles, leaving thick layers of magnesium chloride in Veendam, Netherlands that are now extracted using solution mining. The document provides details on the geological history and formation of the deposits, the mining process, product authentication, and research on the health benefits of magnesium.