Location: | Keweenaw County, Michigan, United States, North America |
Lat / long: | 47.43611, -87.78752 |
dep_id: | 10100311 |
mrds_id: | W062191 |
Commodity type: | metallic |
Major mineral: | Copper |
Operation type: | Surface-Underground |
Production size: | Small ammount of material produced |
Development status: | Past Producer |
ore: | Copper |
gangue: | Calcite, Prehnite, Quartz, Datolite, Laumontite, Epidote, Chlorite |
orebody_fm: | FISSURE |
model: | 96: Native Cu |
ore_ctrl: | Fissure |
Reporter: | Sutphin, D.M. (Cannon, W.F.), Mason Jr., G.T. |
hrock_unit: | Portage Lake Volcanics |
hrock_type: | Basalt |
Year first produced: | 1864 |
yr_lst_prd: | 1864 |
prod_yrs: | 1864 |
References: |
- Deposit:: BUTLER, B.S., AND BURBANK, W.S., 1929, THE COPPER DEPOSITS OF MICHIGAN: USGS PROF PAPER NO. 144, 238 PP.
- Deposit:: CORNWALL, H. R., 1955, BEDROCK GEOLOGY OF THE FORT WILKINS QUADRANGLE, MICHIGAN: U.S. GEOLOGICAL SURVEY, GEOLOGIC QUADRANGLE MAPS OF THE UNITED STATES, GQ 74, 1:24,000.
- Production:: BUTLER AND BURBANK (1929)
|