Mass Fissure, Copper City, Keweenaw Co., Michigan, USA
REF:Deposit:: BUTLER,B.S., AND BURBANK, W.S., 1929, THE COPPER DEPOSITS OF MICHIGAN: USGS PROF. PAPER NO. 144, 238 PP.
Deposit:: WHITE, W.S., CORNWALL, H.R., AND SWANSON, R.W., 1953, BEDROCK GEOLOGY OF THE AHMEEK QUADRANGLE, MICHIGAN: USGS MAP GQ-27, SCALE
Commodities (Major) - Copper
Development Status: Past Producer
Deposit Model: 96: Native Cu
Host Rock Unit: Portage Lake Volcanics
Host Rock: Basalt
6 entries listed. 6 valid minerals.
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Locality Updated: Line pit (Lowe's Mine), State Line District, Cecil Co., Maryland, USAFrom Bill Cordua, 9th Dec 2013 21:28:40