Arsenates, Tungstates, Molybdates

This grouping of minerals each contain an arsenic, tungsten, or molybdenum atom, plus four oxygen atoms.

Arsenates, Tungstates, and Molybdates from Ted Rogers on Vimeo.

I learned about the dangers of Arsenates from UMass Associate Professor of Natural Resources Conservation Timothy Randhir, who is working on ways to halt arsenic poisoning in Bangladesh. Because Bangladesh is desperately poor, there isn't the necessary infrastructure to stop poisoning at the source. Instead, a way must be found to filter arsenic out of the water before it is consumed.

Moving on, we see the sulfate exhibit.