Monday, March 14, 2016

Float Copper

Float Copper
Flotation occurs on water, e.g. cork on water.  In this type of flotation, the copper floated on soil just as my driveway does.

I think this piece of copper was nearly at its melting/flowing point (1983° F).  The closeup view shows that it is like a piece of pie dough which needs just a tad of water to make it roll well.

Float Copper (other side)

Had it been totally melted, it would have been flat, one side (the top) and rounded on the bottom conforming to the shape of the soil beneath.

According to the tag in the bag, it came from Michigan.  It probably came from the Michigan Upper Peninsula where there are copper mines located.

Another factor which must not be overlooked with this specimen is glaciation.  The glacier ground over it or pushed it along to form striations (scratches) on its surface.

Glacial Striations on Float Copper
Glacial Striations on Float Copper
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