Glossary of geology (American Geological Institute)
Geology Library Reference QE5 .B38 1997
Rock-forming minerals (W.A. Deer, R.A. Howie, J. Zussman)
Geology Library Reference QE364.2.R6 D45 1978-
Encyclopedia of minerals (Roberts, Willard Lincoln)
Geology Library Reference QE355 .R6 1990
WEBSITES
Geologic Time: Text by W.L. Newman made available by the USGS.
Illustrated Glossary of Geological Terms from Iowa State University