592 entries of Mineral Photo Archive of Native Copper Specimen
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Copper in conglomerate
from Calumet and Hecla Mine, Houghton County, Keweenaw Peninsula Copper District, Michigan
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Copper in shale
from White Pine Mine, Keweenaw Peninsula Copper District, Ontonagon County, Michigan
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Copper on Prehnite
from Iroquois Mine, 3.5 km northeast of Ahmeek, Keweenaw County, Michigan
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Copper on Prehnite
from Osceola Mine, Keweenaw Peninsula Copper District, Houghton County, Michigan
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Copper on Prehnite
from Iroquois Mine, 3.5 km northeast of Ahmeek, Keweenaw County, Michigan
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Copper on Prehnite
from Osceola Mine, Keweenaw Peninsula Copper District, Houghton County, Michigan
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Copper on Prehnite
from Iroquois Mine, 3.5 km northeast of Ahmeek, Keweenaw County, Michigan
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Copper var. Skull
from Centennial Mine, Calumet, Houghton County, Keweenaw Peninsula Copper District, Michigan
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Copper with Silver
from South Kearsarge Mine, Houghton County, Keweenaw Peninsula Copper District, Michigan
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