| Deposit ID | 10048024 |
|---|---|
| MRDS ID | M700432 |
| Record type | Site |
| Current site name | Initial Cr-Pt |
| Geographic coordinates: | -109.94635, 45.38659 (WGS84) |
|---|---|
| Elevation | 2530 |
| Relative position | ABOUT 2.2 MI WEST OF MOUNTAIN VIEW LAKE |
Political divisions (FIPS codes)
Sweet Grass(county)
Montana(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Meyer Mountain(quadrangle 1:24,000 scale)
Red Lodge(quadrangle 1:100,000 scale)
Billings(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Stillwater(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 | 005S | 014E | 23,24 | Montana |
| Commodity | Importance |
|---|---|
| Platinum Critical | Primary |
| Chromium Critical | Secondary |
| Copper | Secondary |
| Nickel Critical | Secondary |
| Materials | Type of material |
|---|---|
| Chromite | Ore |
| Olivine | Gangue |
| Result | 10.97 PPM PT+PD OVER 1.2 FT, SURFACE SAMPLE. AVERAGE CR2O3=13.2%, RANGE=0.66-42.04% |
|---|
| Host or associated | Host | ||||
|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Ultramafic Intrusive Rock > Peridotite | ||||
| |||||
| (1) | -109.94635, 45.38659 |
|---|
| 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 | Numerous Faults Of 1-100 Ft Displacement |
| General form | MASSIVE BAND AND DISSEMINATED |
|---|---|
| Strike | SW |
| Dip | STEEPLY N AND S |
| Thickness | 0.3M |
| Length | 152.4M |
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1941 |
| District name | In Stillwater Complex |
|---|
| Ownership category | National Forest |
|---|
| Type of workings | Surface |
|---|---|
| Length | 54.86M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | M700432 |
WIMMLER, N.L., 1948, INVESTIGATIONS OF CHROMITE DEPOSITS OF THE STILLWATER COMPLEX, STILLWATER AND SWEETGRASS COUNTIES, MONT.: U.S. BUREAU OF MINES REPORT OF INVESTIGATIONS 4368, P. 29-31.
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.
TRENCHING AND ANALYSES BY USBM DURING WWI
| Subject category | Comment text |
|---|---|
| Deposit | ONE CHROMITE BAND. MAXIMUM THICKNESS IS OF MASSIVE CHROMITE; WITH DISSEMINATED ORE BAND IS 6.8 FT THICK; UNPUBLISHED MODEL NAME: PGE-ENRICHED STRATIFORM CHROMITITE. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-JAN-1973 | Dohrenwend, John C. | 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.