Sn element is obtained primarily from mineral cassiterite (SnO2), and is extracted in a carbon furnace by road Sn element cassiterite. Sn element constitutes only about 0.001 percent of the Earth’s crust and is primarily mined in Malaysia. The Grey Sn element slowly turns at temperatures above 13.2 ° C into the second form of Sn element, the white Sn element.