Location: | Cook County, Minnesota, United States, North America |
Lat / long: | 48.08611, -90.84736 |
dep_id: | 10072946 |
mrds_id: | W018677 |
Commodity type: | metallic |
Trace mineral: | Copper, Nickel |
Operation type: | Unknown |
Production size: | Unknown |
Development status: | Occurrence |
ore: | Bornite, Chalcopyrite |
gangue: | Biotite, Olivine, Plagioclase, Pyroxene, Pyrrhotite |
orebody_fm: | TABULAR |
work_type: | Surface |
model: | 9: Duluth Cu-Ni-PGE |
conc_proc: | See General Comments. |
ore_ctrl: | Sulfides Segregated In Basal Troctolites Sub-Parallel To Lower Contact. |
Reporter: | Sutphin, David M., Mason Jr., G.T. |
hrock_unit: | Poplar Lake Intrusion |
hrock_type: | Troctolite |
disc_yr: | 1966 |
discr: | Cleveland-Cliffs Iron Co. |
References: |
- Deposit:: JOHNSON, R.G., 1970, ECONOMIC GEOLOGY OF A PORTION OF THE DULUTH COMPLEX, UNIV. OF IOWA PHD THESIS.
- Deposit:: WEIBLEN, AND MOREY, 1975, THE DULUTH COMPLEX--AN INTEGRATED SUMMARY; PROC. A.I.M.E.
- Deposit:: 1969 GEOLMAP MINN. GEOLOGICAL SURVEY OPEN FILE MA
|