| Deposit ID | 10088838 |
|---|---|
| MRDS ID | M060088 |
| Record type | Site |
| Current site name | Gish Mine |
| Alternate or previous names | Bonanza Claims, Boulder River, M & R Group |
| Related records | 10245973 |
| Geographic coordinates: | -110.20302, 45.47742 (WGS84) |
|---|---|
| Elevation | 1731 |
| Relative position | 4 MI FROM CHROME MTN; 33 MI FROM BIG TIMBER. ABOUT 1.1 MI SOUTHEAST OF FALLS CREEK 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 | 23,25 | Montana |
| Commodity | Importance |
|---|---|
| Chromium Critical | Primary |
| Platinum Critical | Tertiary |
| Palladium Critical | Tertiary |
| Rhodium Critical | Tertiary |
| Materials | Type of material |
|---|---|
| Chromite | Ore |
| Olivine | Gangue |
| Result | AVERAGE OF CHROMITITE: 187.5 PPB PT, 139.5 PPB PD, 149 PPB RH (MAX. 290 PPB PT, 400 PPB PD, 260 PPB RH). TRENCH SAMPLES RANGED FROM 0.5-5.2 FT LONG AND 0.78-42.91% CR203 (AVERAGE 5.37 FT AT 15.1% CR2O3). DIAMOND DRILL HOLES (5) INTERSECTED 1.4-6.7 FT CHROMITE AT 12.3-21.7% CR2O3. MASSIVE ORE AVERAGES 36.33% CR2O3, DISSEMINATED 13.21% |
|---|
| 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) | -110.20302, 45.47742 |
|---|
| 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 | Graham Creek Fault And Other Faults With Small Offsets |
| General form | MASSIVE BAND, DISSEMINATED |
|---|---|
| Strike | N60-80W |
| Dip | 40-65NE |
| Thickness | 1.52M |
| Length | 914.4M |
| Depth to top | 0M |
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1918 |
| District name | In Stillwater Complex |
|---|
| Ownership category | Private |
|---|
| Type | Operator |
|---|---|
| Owner | Anaconda Co. |
| First year | 1942 |
| Type | Owner |
|---|---|
| Owner | David Davis |
| Home office | Roundup, Mt. |
| First year | 1985 |
| Type of workings | Surface/Underground |
|---|---|
| Length | 1239.01M |
| Overall length | 240.49M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | M060088 |
WIMMLER, N.L., 1948, INVESTIGATION OF CHROMITE DEPOSITS OF THE STILLWATER COMPLEX, STILLWATER AND SWEETGRASS COUNTIES, MONT.: U.S. BUREAU OF MINES REPORT OF INVESTIGATIONS 4368, P. 22-26.
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. 73-81.
SCHAFER, P.A., 1937, CHROMITE DEPOSITS OF MONTANA: MONTANA BUREAU OF MINES AND GEOLOGY MEMOIR 18, P. 11.
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.
1937 COMPILE MBMG MEM 18
1949 RECON HOWLAND, GARRELS, JONES, BULL 948-C
SCHAFER FOR MASSIVE AND DISSEMINATED ORE OF BONANZA CLAIMS, AND M & R GROUP
| Subject category | Comment text |
|---|---|
| Deposit | THICKNESS AVERAGES 4.8 FT. 2 MASSIVE BANDS WITH SHARP FOOTWALLS AND DISSEMINATED ORE UP INTO HANGING WALL |
| 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.
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.