Mohawkite, a rare compound of silver, copper, arsenic, cobalt, nickle and iron, is found only one place in the world - in the Mohawk-Ahmeek area of Keweenaw County in Michigan (making this obviously the type locality). This large 5-ounce nugget has been polished to show its pretty silvery tone with a hint of gold. We recently acquired the only available stash we know about of this material, which was mined in the 1950s. It had been sitting in a garage for a long, long time. 6.1 x 4.2 x 1.2cm