Works Cited

1. Exploring Chemical Elements and Their Compounds 

Heiserman, David 

Tab Books inc. ; US , 1992

2. Handbook of Chemistry and Physics

David R. Lide ed.

CRC Books LLC; Boca Raton FL, 1997

3.  Native Element Mineral Specimens

http://www.einsteins-emporium.com/earth/minerals/em210.htm

Accessed 02-05-00

4. Knapp, Brian

Elements: Sulfur volume 13

Atlantic Europe Publishing Company Limited ; Danbury CT, 1996

5. Chemical Elements

http://www.chemicalelements.com/elements/s.html

Accessed 02-06-00