$250
Bubbly blue/green McGuinnessite on all sides of matrix. McGuinnessite is a rare manganese, copper, carbonate and this specimen is from the type locality of the Copper King Mine in the Red Mountain Mining District. Ex. Chuck Trantham collection. Self collected by Chuck and Al McGuinness in 1982. This was the best McGuinnessite I saw in the collection, and Chuck had it priced at $250.