AKS21 Copper
Rockland Mine, Ontonagon Co., Upper Peninsula, Michigan, United States
8.3x 2.4x 2.5 cm             
$375

A group of rather large, flattened copper crystals on a matrix of weathered crystalline copper.

The Rockland mine operated from 1853 to 1880, with one change of ownership in 1870, and produced an estimated 5.8 million lbs of copper.  

This crystal was collected on the mine dumps in 2005 by a friend of mine, and is a surprisingly good specimen from a locality whose specimens are seen rarely at best.










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