| Deposit ID | 10048026 |
|---|---|
| MRDS ID | M700434 |
| Record type | Site |
| Current site name | Blakely Cliffs |
| Geographic coordinates: | -110.1683, 45.45659 (WGS84) |
|---|---|
| Elevation | 2530 |
| Relative position | 2 MI NORTHWEST OF CHROME MOUNTAIN; 33 MI FROM BIG TIMBER; ABOUT 1.4 MI EAST 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 | Montana |
| Materials | Type of material |
|---|---|
| Chromite | Ore |
| Olivine | Gangue |
| Result | SAMPLES OF MASSIVE CHROMITE: 47.6-51.0% CR2O3 |
|---|
| Model code | 2 |
|---|---|
| USGS model code | 2a |
| Deposit model name | Bushveld Cr |
| Host or associated | Host | ||||
|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Harzburgite | ||||
| |||||
| (1) | -110.1683, 45.45659 |
|---|
| 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 | Small Faults |
| General form | MASSIVE LAYERS, DISSEMINATED |
|---|---|
| Strike | NW |
| Dip | STEEP |
| Thickness | 0.3M |
| Length | 15.24M |
| Depth to top | 0M |
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| District name | In Stillwater Complex |
|---|
| Ownership category | National Forest |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | M700434 |
HOWLAND, A.L., GARRELS, E.M., AND JONES, W.R., 1949, CHROMITE DEPOSITS OF BOULDER RIVER AREA, SWEETGRASS COUNTY, MONTANA: U.S. GEOLOGICAL SURVEY BULLETIN 948-C, P. 74.
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.
| Subject category | Comment text |
|---|---|
| Deposit | CHROMITITE LAYERS C THROUGH G ARE EXPOSED. MASSIVE LAYERS AVERAGE 3 IN. THICK. DISSEMINATED AREAS ARE UNECONOMIC |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-JAN-1973 | Dohrenwend, John C. | U.S. Geological Survey | |
| Updater | 01-FEB-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.