I read where hydrochemical sampling is starting to be used to search for Carlin-style gold deposits in Nevada.  While I understand that those are sediment-hosted deposits of the Basin and Range Province (that may not quite extent into Arizona's Cochise County), would such be of value at Hay Mountain, or is such just not appropriate in the case of porphyry or caldera-related deposits?

Or, perhaps the plant-based geochemical sampling already accomplished at Hay Mountain does much the same thing?  If so, which is of more value?

Thank you.

VP