| Deposit ID | 10042345 |
|---|---|
| MRDS ID | M060099 |
| Record type | Site |
| Current site name | Boulder River Ni-Cu Riverside |
| Alternate or previous names | Riverside Prospect |
| Related records | 10173430 |
| Geographic coordinates: | -110.19969, 45.47298 (WGS84) |
|---|---|
| Elevation | 1676 |
| Relative position | 4 MI SOUTHEAST OF MT. RAE. 35 MI BY ROAD SOUTH OF BIG TIMBER. ABOUT 1.1 MI NORTH OF ASPEN CAMPGROUND |
Political divisions (FIPS codes)
Sweet Grass(county)
Montana(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Chrome Mountain(quadrangle 1:24,000 scale)
Gardiner(quadrangle 1:100,000 scale)
Bozeman(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper Yellowstone(hydrologic unit)
Upper Yellowstone(hydrologic accounting unit)
Upper Yellowstone(hydrologic subregion)
Missouri(hydrologic region)
Federal lands
Custer Gallatin National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Montana | Sweet Grass |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Montana Principal | 004S | 012E | 23,24 | NW4 (23) | Montana |
| Commodity | Importance |
|---|---|
| Nickel Critical | Primary |
| Copper | Primary |
| Cobalt Critical | Secondary |
| PGE Critical | Tertiary |
| Gold | Tertiary |
| Silver | Tertiary |
| Materials | Type of material |
|---|---|
| Chalcopyrite | Ore |
| Pentlandite | Ore |
| Pyrrhotite | Ore |
| Magnetite | Gangue |
| Plagioclase | Gangue |
| Result | ANALYSIS OF ORE SAMPLE COLLECTED ON DUMP: 0.3% CU, 0.3% NI, 23.1% FE, TR AU, TR AG, 0.06% CO. AVERAGE PGE: 50.8 PPB PT, 124.3 PPB PD, 11.2 PPB RH (MAX.: 170 PPB PT, 470 PPB PD, 32 PPB RH) |
|---|
| Model code | 1 |
|---|---|
| USGS model code | 1 |
| Deposit model name | Stillwater Ni-Cu |
| Host or associated | Host | ||||
|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Ultramafic Intrusive Rock > Peridotite | ||||
| |||||
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Hornfels |
| (1) | -110.19969, 45.47298 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | The Stillwater Complex Is Exposed Along The Northern Margin Of The Beartooth Uplift, One Of Several Laramide Basement-Cored Ranges That Make Up The Rocky Mountain Foreland Of South-Central Montana (Foose And Others, 1961: Kulik And Schmidt, 1988) |
| Type of structure | Local |
| Structure description | East-West And Northwest Trending Faults |
| General form | STRATIFORM, PODS, LENSES, DISSEMINATED |
|---|---|
| Width | 9.14M |
| Depth to top | 0M |
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| District name | In Stillwater Complex |
|---|
| Ownership category | National Forest |
|---|
| Type | Operator |
|---|---|
| Owner | Anaconda Co. |
| First year | 1977 |
| Type | Owner |
|---|---|
| Owner | Charles Blakeley And Charles Kasnick |
| First year | 1950 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | M060099 |
ROBY, R.N., 1949, INVESTIGATION OF COPPER-NICKEL DEPOSITS OF THE STILLWATER COMPLEX, STILLWATER AND SWEETGRASS COUNTIES, MONT.: U.S. BUREAU OF MINES REPORT OF INVESTIGATIONS 4431, P. 10.
ZIENTEK, M.L., 1993, MINERAL RESOURCE APPRAISAL FOR LOCATABLE MINERALS: THE STILLWATER COMPLEX, IN HAMMARSTROM, J.M., ZIENTEK, M.L., AND ELLIOTT, J.E., EDS., MINERAL RESOURCE ASSESSMENT OF THE ABSAROKA-BEARTOOTH STUDY AREA, CUSTER AND GALLATIN NATIONAL FORESTS, MONTANA: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 93-207, P. F1-F83.
PAGE, N.J, 1979, STILLWATER COMPLEX, MONTANA - STRUCTURE, MINERALOGY, AND PETROLOGY OF THE BASAL ZONE WITH EMPHASIS ON THE OCCURRENCE OF SULFIDES: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 1038, 69 P.
REED, G.C., 1950, MINES AND MINERAL DEPOSITS (EXCEPT FUELS), PARK COUNTY, MONT.: U.S. BUREAU OF MINES INFORMATION CIRCULAR 7546, P. 55.
| Subject category | Comment text |
|---|---|
| Deposit | 20-30 FT MINERALIZED ZONE. GEOCHEMICAL ANOMALY PRESENT IN AREA OF DEPOSIT |
| Deposit | RECORD DC08747 HAS BEEN MERGED AND DELETED. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-JAN-1973 | Dohrenwend, John C. | U.S. Geological Survey | |
| Updater | 01-MAR-1980 | Doyle, Brien (Wells, John) | U.S. Geological Survey | |
| Updater | 01-AUG-1991 | Peterson, Jocelyn A. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
MRDS records operators as of each record's last update (≤ 2019). Some of the operators listed here have since changed hands or dissolved:
Curated by qvyshift.com from publicly-reported M&A activity (SEC filings, press releases, USGS Mineral Yearbooks). Not authoritative — verify against primary sources before relying on it. The MSHA panel above is the current authoritative source for actively-permitted mines.