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Nugget


#1

I’m making a ring using what I thought was a silver nugget (set like
a stone). It now appears to be a nugget consisting of half silver and
half what seems to be copper. Does this happen often, two metals being
found together like this?

Janet Kofoed


#2

Your nugget of combined silver and copper is most likely what is
popularly called a “half breed” Some of these specimens occurred in
very large sizes. They were typically found during the mining of the
Keewanai Peninsula copper deposits of Lake Michigan. I once had one
which weighed about two pounds and was worth fifteen hundred dollars
! Unfortunately, because of their value, many have been assembled and
/or “manufactured” Ron at Mills Gem, Los Osos, CA.