| Deposit ID | 10048466 |
|---|---|
| MRDS ID | MP00053 |
| Record type | Site |
| Current site name | South Filson Creek deposit |
| Alternate or previous names | Filson Creek |
| Geographic coordinates: | -91.67378, 47.82167 (WGS84) |
|---|---|
| Elevation | 457 |
| Location accuracy | 1000(meters) |
| Relative position | ABOUT 1 MI NORTHWEST OF OMADAY LAKE, Est Estimated From Map And Description In Kuhns And Others, 1990 |
Political divisions (FIPS codes)
Lake(county)
Minnesota(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Bogberry Lake(quadrangle 1:24,000 scale)
Ely(quadrangle 1:100,000 scale)
Two Harbors(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Rainy Headwaters(hydrologic unit)
Rainy(hydrologic accounting unit)
Rainy(hydrologic subregion)
Souris-Red-Rainy(hydrologic region)
Federal lands
Superior National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Minnesota | Lake |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| 4th Principal | 062N | 011W | 25 | SE4 OF SW4 | Minnesota |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Nickel Critical | Primary |
| Palladium Critical | Secondary |
| Platinum Critical | Secondary |
| Gold | Secondary |
| Silver | Secondary |
| Cobalt Critical | Secondary |
| Materials | Type of material |
|---|---|
| Bornite | Ore |
| Chalcocite | Ore |
| Chalcopyrite | Ore |
| Covellite | Ore |
| Cubanite | Ore |
| Digenite | Ore |
| Galena | Ore |
| Millerite | Ore |
| Niccolite | Ore |
| Pentlandite | Ore |
| Pyrrhotite | Ore |
| Sperrylite | Ore |
| Sphalerite | Ore |
| Biotite | Gangue |
| Chlorite | Gangue |
| Iddingsite | Gangue |
| Ilmenite | Gangue |
| Magnetite | Gangue |
| Sericite | Gangue |
| Serpentine | Gangue |
| Stilpnomelane | Gangue |
| Result | CU:NI=3:1. CORE YIELDED UP TO 87.5 FT OF 1.24% CU+NI. MAXIMUM VALUES FROM HIGH-GRADE INTERSECTIONS OF 4 DRILL CORES ARE 1.35% CU, 0.36% NI, 1.1 PPM PT, 2.6 PPM PD, 31 PPB IR, 19 PPB OS, 78 PPB RH, 130 PPB RU, 370 PPB AU, 4.5 PPM AG. WEIGHTED AVERAGE OF COMBINED PT AND PD=651 PPB, OF AU=137 PPB. PD:PT=2:1, CU:NI=3:1 IN MINERALIZED ZONES. PD RANGES FROM 53-2600 PPB, PT FROM 25-1100 PPB, AU FROM <1-413 PPB, AG FROM 0.4-8.8 PPM, AND RH FROM <2-78 PPB |
|---|
| Model code | 9 |
|---|---|
| USGS model code | 5a |
| Deposit model name | Duluth Cu-Ni-PGE |
| Host or associated | Associated | ||||
|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Granitoid > Granite | ||||
| Rock unit name | Giants Range Batholith | ||||
| |||||
| Host or associated | Host | ||||
|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock > Gabbro > Troctolite | ||||
| Rock unit name | South Kawishiwi Intrusion | ||||
| |||||
| (1) | -91.67378, 47.82167 |
|---|
| Type of structure | Local |
|---|---|
| Structure name | Faults |
| Type of structure | Local |
| Structure name | Brecciation |
| General form | DISSEMINATED, DISCONTINUOUS VEINLETS |
|---|
| Development status | Prospect |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1967 |
| Discoverer | Hanna Mining Co. |
| District name | Western Margin Duluth Complex |
|---|
| Ownership category | National Forest |
|---|
| Type | Operator |
|---|---|
| Owner | American Copper And Nickel Co. |
| First year | 1989 |
| Type | Owner |
|---|---|
| Owner | U.S. Forest Service |
| First year | 1989 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | MP00053 |
KUHNS AND OTHERS, 1990; MORTON AND HAUCK, 1989; HAUCK AND BARNES, 1989
KUHNS, M.J.P., HAUCK, S.A., AND BARNES, R.J., 1990, ORIGIN AND OCCURRENCE OF PLATINUM GROUP ELEMENTS, GOLD AND SILVER IN THE SOUTH FILSON CREEK COPPER-NICKEL MINERAL DEPOSIT, LAKE COUNTY, MINNESOTA: NATURAL RESOURCES RESEARCH INSTITUTE TECHNICAL REPORT NRRI/GMIN-TR-89-15, 60 P.
MORTON, PENELOPE, AND HAUCK, S.A., 1989, PRECIOUS METALS IN THE COPPER-NICKEL DEPOSITS OF THE DULUTH COMPLEX, IN MOREY, G.B., ED., WORKSHOP ON THE APPLICABILITY OF GOLD AND PLATINUM-GROUP-ELEMENT MODELS IN MINNESOTA: MINNESOTA GEOLOGICAL SURVEY INFORMATION CIRCULAR 30, P. 47-48.
HAUCK, S.A., AND BARNES, R.J., 1989, PRECIOUS METALS (PT-PD-AU-AG) IN THREE COPPER-NICKEL DEPOSITS IN THE DULUTH COMPLEX: NATURAL RESOURCES RESEARCH INSTITUTE, CENTER FOR APPLIED RESEARCH AND TECHNOLOGY DEVELOPMENT, TECHNICAL SUMMARY REPORT NRRI/GMIN-TSR-89-1, 19 P.
| Subject category | Comment text |
|---|---|
| Deposit | DEPOSIT IS ABOUT 2200 FT ABOVE BASAL CONTACT OF DULUTH COMPLEX, ONE OF THE SO-CALLED CLOUD ZONE DEPOSITS. THERE WERE LIKELY TWO EPISODES OF MINERALIZATION, A PRIMARY STAGE AND A HYDROTHERMAL STAGE. THE HYDROTHERMAL STAGE IS SPATIALLY ASSOCIATED WITH HIGHLY SERPENTINIZED FRACTURES IN A PROPOSED NORTHEAST-TRENDING FAULT ZONE. SECONDARY SULFIDES FORMED MICROVEINLETS RELATED TO THE FRACTURING. PT AND PD HAVE HIGHER CONCENTRATIONS IN THE SECONDARY SULFIDE STAGE AND CORRELATE WITH HIGH SULFUR VALUES. ZONES OF SECONDARY MINERALIZATION ARE <1-90 FT THICK |
| Deposit | Discovery Year: LATE 1960'S |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-DEC-93 | Peterson, Jocelyn A. | U.S. Geological Survey | |
| Editor | 24-FEB-05 | Woodruff, L.G. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.