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rough exposed Lodolite inclusions
and is rated at a 7 on the Mohs hardness scale
such as manganese
5 inches in size
Quartz with hematite is a type of rock that contains both quartz and the mineral hematite
Keweenaw Michigan Native Copper Size:Large 6" x 4" x 4" rough exposed Lodolite inclusionsBeautiful specimens of Keweenaw Michigan Native Copper. Prices vary with the specimens depending on shape, size and weight. Michigan's Keweenaw Peninsula is the most important locality in the world for pure native copper. Mining began in 1845 and continued until 1968; over 5 million tons of refined copper were recovered from Michigan's copper mines. In the early 1900's it led the world in copper production and "Lake Copper" was the purity standard to
