Molybdates and Tungstates
From Conservapedia
The molybdates and tungstates are compounds of metallic elements with the molybdate and tungstate radicals, respectively. These minerals as a rule are heavy, soft, brittle, and dark or vividly colored. Chesterman, p. 495
Sources
- Chesterman, Charles W. The Audubon Society Field Guide to North American Rocks and Minerals, Alfred A. Knopf: New York (1987)