How would we obtain the sulfur?

Sulfur is widely distributed in nature (Figure 3). It is found in many minerals and ores, including: iron pyrites, galena, cinnabar, gypsum, barite, epsom salts and in mineral springs and other waters. It is found uncombined in some volcanic regions. Sulfur often occurs with coal, petroleum, and natural gas and has been found in meteorites. It is also found in plants and animals, being an element of most proteins and protoplasm.

Sulfur is also produced by the Sicilian Method. In the Sicilian Method the sulfur-bearing ores are piled in a mound and ignited. The heat produced by the burning melts some of the sulfur, which is collected and cast.