Encyclopedia of European and Asian regional geology . Encyclopedia of volcanoes . Glossary of geological terms from the University of California, Berkeley, Museum of Paleontology . Woodhead, J.A. 1999. Produced and maintained by Dr. Jillian F. Banfield, Department of geology and geophysics , University of Wisconsin, Madison .
Information includes, chemical formulae, color, hardness, cleavage, luster, and specific gravity.
From the Department of Mineralogy, University of Geneva. Maintained by Pierre Perroud. Carmichael, R.S. 1989. CRC practical handbook of physical properties of rocks and minerals . National Earthquake Information Center , U.S. Geological Survey Directory of geoscience departments 1997-98. 1997.