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Product Description
Kingston Conglomerate Copper Stone Slab Rough Rock Michigan
This Kinston Conglomerate Native Copper stone slab is 5.56 inches by 4.25 inches and 5.5 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.
