Chemical halos associated with lode deposits in the Park City district have been detected and have potential as guides in exploration. More than 400 wall rock samples collected in proximity to seven veins were analyzed by atomic absorption for Ag, Cu, Mn, Pb, and Zn. Petrographic study of selected samples showed no detectable mineralogical halos, but chemical halos of Ag, Cu, Mn, Pb, and Zn were found, and they enlarge the target for lode deposit exploration by a factor of more than ten.

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