Comments about ‘Federal study finds mercury in trout caught in three Grand Canyon creeks’

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Published: Thursday, April 24 2014 12:00 a.m. MDT

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A Chem Engineer
Pocatello, ID

I find it odd that the most likely explanation is not even mentioned. There are naturally-occurring deposits of cinnabar (mercuric sulfide) throughout the southwestern U.S. - and with the Grand Canyon cutting through so many layers of strata - I can easily see a small vein of cinnabar being exposed.

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