Physical Data:
CRC Handbook of Chemistry and Physics, 77th Edition
Historical and Usage Information:
CRC Handbook of Chemistry and Physics, 77th Edition
Exploring Chemical Elements and their Compounds; David L. Heiserman, 1992
Mineral Formulas:
United States Geological Survey - Mineral Resources Program
Mindat.org - The Online Mineralogy Resource
The Mineral Gallery
The Mineral and Gemstone Kingdom
Mineralogy Database
Radioisotope Half-life and Decay Modes:
National Nuclear Data Center
Lawrence Berkeley Laboratory
This page is maintained by Steve Gagnon.