| Deposit ID | 10070489 |
|---|---|
| MRDS ID | W013440 |
| Record type | Site |
| Current site name | Crystal Graphite Mine |
| Related records | 10147611 |
| Geographic coordinates: | -112.50587, 45.10268 (WGS84) |
|---|---|
| Elevation | 2362 |
| Relative position | ABOUT 15 MILES, BY ROAD, SE OF DILLON, MONTANA |
Political divisions (FIPS codes)
Beaverhead(county)
Montana(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Ashbough Canyon(quadrangle 1:24,000 scale)
Dillon(quadrangle 1:100,000 scale)
Dillon(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Beaverhead(hydrologic unit)
Missouri Headwaters(hydrologic accounting unit)
Missouri Headwaters(hydrologic subregion)
Missouri(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Montana | Beaverhead |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Montana Principal | 008S | 007W | 29,30,31 | Montana |
| Commodity | Importance |
|---|---|
| Graphite Critical | Primary |
| Materials | Type of material |
|---|---|
| Graphite | Ore |
| Result | GRADE OF MILL FEED IS 8-12% CARBON. CONCENTRATES ARE 85-90 % CARBON |
|---|
| Host or associated | Associated | ||||
|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock > Diorite > Diabase | ||||
| |||||
| Host or associated | Associated |
|---|---|
| Rock type | Plutonic Rock > Pegmatite |
| Host or associated | Associated |
|---|---|
| Rock type | Plutonic Rock > Granitoid > Granite |
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Gneiss |
| Rock unit name | Pre Belt |
| Rock description | Pre Belt |
| (1) | -112.50587, 45.10268 |
|---|
| Type of structure | Local |
|---|---|
| Structure description | Foliation Trends Generally Ne And Dips Nw. Tight Isoclinal Folds |
| General form | PINCH AND SWELL, BUNCHES, POCKETS |
|---|---|
| Width | 1.83M |
| Development status | Past Producer |
|---|---|
| Commodity type | Non-metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1899 |
| Discoverer | Mr. Robbins |
| Year of first production | 1902 |
| District name | Ruby Range |
|---|
| Ownership category | Private |
|---|
| Type | Operator |
|---|---|
| Owner | Crystal Graphite Co. |
| Type | Owner |
|---|---|
| Owner | Ralph I. Smith, Dillon, Montana |
| Year | 1920 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Period | 1902 - 1920 | ||||||||||||||
| Material | GRF | ||||||||||||||
| Accuracy | Estimate | ||||||||||||||
| Description | Cp_Grade: ^Approx. 10 % C | ||||||||||||||
| |||||||||||||||
| Type of workings | Underground |
|---|---|
| Length | 1066.8M |
| Overall depth | 106.68M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | W013440 |
MBMG BULL 85.
USGS BULL 574, P. 105-110.
1914 COMPILE WINCHELL, A.N., U.S.G.S. BULL. 574
1972 COMPILE M.B.M.G. BULL. 85
GEACH, 1972, MBMG BULL 85.
| Subject category | Comment text |
|---|---|
| Deposit | GRAPHITE OCCURS IN VEINS IN GNEISS AND DISSEMINATIONS IN PEGMATITE. MINERALIZED ZONES 100 TO 150 FT. ACROSS ARE BELIVED TO BE CONTINUOUS FROM UPPER TO LOWER LEVELS |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-APR-1976 | Mlynarczyk, Meg S.; Krohn, D. | U.S. Geological Survey | |
| Updater | 01-AUG-1980 | Loen, Jeffrey S. (Pearson, Robert C.) | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.