US Dollar
Australian Dollar
Euro
CAD
Product Description
Kingston Conglomerate Copper Stone Slab Rough Rock Michigan
This Kinston Conglomerate Native Copper stone slab is 5.7 inches by 4.7 inches and 6 mm thick.
The unpolished stone slab weighs .44 lbs. and is shown wet in the first 4 pictures.
Kingston Conglomerate has shiny native copper. It is a very pretty conglomerate brick red matrix with specks and veins of shiny Native Copper.
Kingston Conglomerate came from the Calumet & Hecla Mine in Houghton County, Michigan. Formed in 1871, the Calumet & Hecla Mine is an underground copper mine consisting of 96 levels with 16 incline shafts and one vertical shaft named Red Jacket. Mining operations ceased in 1968 following a labor strike.
It was first discovered in 1962; the ore body stretches for about 60 miles and the vein is 1 to 100+ feet thick.
