in what compounds or forms is sulfur commonly found
These sulfides are produced when things decay without air. Sulfur compounds are chemical compounds containing sulfur ions. Sulfur comes in several forms: oxidation states of -2 (hydrogen sulfide), +4 (sulfur dioxide, sulfites) and +6 (sulfuric acid, sulfates) are most common, although there are other oxidation states.
Chemist for uranium nuclear fuels. Sulfur is found in nature as pure element (S) - solid or in colloidal solutions, as gas (H2S) and is also present in many minerals.