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Variability in isotopic composition of total Hg in mine-waste calcine (open box) and pH 5 water-leachable Hg (filled box) of those calcines from mines of the Terlingua district and McDermitt mine. MAR = Mariposa mine, MSM = Mariscal mine, SB = Study Butte mine, and MCD = McDermitt mine. Error bars represent 2σ of the mean. Cinnabar from the Terlingua district and McDermitt mine (gray box) are shown for reference.
