Copper nuggets are mostly a dull light/dirty green straight out of the ground.They will NOT turn shiny red unless you give them a bath in muriatic acid for a day or more.They are from the northern Michigan area and were brought down by glaciers,same as the gold, and can be found about anywhere, mostly by chance. If you are finding glacial gold ,be on the lookout for copper nuggets and garnets too.
My friend in Madison ,Wisconsin found a softball size copper nugget almost 2 feet down while detecting up near Madison in a farm field. My friend in Logansport ,Indiana has one about 10 pounds and you can see the striations , where the glacier moved this chunk of metal against the ground and scratched the nugget, its pretty unique.It was found on top of a limestone quarry.The quarry owners move the glacial till, red dirt, off the limestone, so they can blast out the limestone itself and make cement.That red dirt they push off is loaded with copper nuggets and sometimes gold nuggets too. And after the dirt is pushed off the limestone, there are deep crevices exposed that can have gold in as well as copper nuggets.BUT, quarries can be rather dangerous places so be extra careful and getting permission can be tough.
Club URL is w w w. g e o c i t i e s. c o m/ i n d i a n a g o l d/ Remove all the spaces or just do a search on the internet for gold in Indiana.Central Indiana GPAA chapter.
Next outing is Sat, July 12 at Adams Mill, east of Lafayette, Indiana.Its an old water powered grain mill and covered bridge from 1850. The better gold seems to be below the dam area, nice place for a picnic too. Wildcat Creek is good for inner tubing, NOT good if its flooding,almost took out the mill 2 years ago. The DeLorme Atlas for Indiana shows Adams Mill there east of rt 75 and north of 26. Club meeting at 5pm that Sat. I am the only one from Illinois, driving a brown Chevy Astro van.
Hope to have my 2.5 inch dredge ready by then?
-Tom