| Deposit ID | 10015839 |
|---|---|
| MRDS ID | DB02093 |
| Record type | Site |
| Current site name | Valley Forge Mine |
| Geographic coordinates: | -112.24117, 46.49157 (WGS84) |
|---|---|
| Location accuracy | 500(meters) |
| Relative position | 0.6 KM NE OF RIMINI. |
Political divisions (FIPS codes)
Lewis and Clark(county)
Montana(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Chessman Reservoir(quadrangle 1:24,000 scale)
Butte North(quadrangle 1:100,000 scale)
Butte(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper Missouri(hydrologic unit)
Upper Missouri(hydrologic accounting unit)
Missouri-Marias(hydrologic subregion)
Missouri(hydrologic region)
Federal lands
Helena-Lewis and Clark National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Montana | Lewis and Clark |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Montana Principal | 009N | 005W | 33 | Montana |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Silver | Primary |
| Lead | Primary |
| Zinc Critical | Secondary |
| Copper | Secondary |
| Arsenic Critical | Tertiary |
| Materials | Type of material |
|---|---|
| Chalcopyrite | Ore |
| Galena | Ore |
| Gold | Ore |
| Sphalerite | Ore |
| Pyrite | Gangue |
| Quartz | Gangue |
| Tourmaline | Gangue |
| Result | ORE $6/TON AU, 12 OZ/TON AG, 7% PB. HIGHER GRADE ORE SAID TO CARRY $11/TON AU. |
|---|
| Host or associated | Associated | ||||||
|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Granitoid > Quartz Monzonite | ||||||
| Rock unit name | Butte Quartz Monzonite (Boulder Batholith) | ||||||
| Rock description | Butte Quartz Monzonite (Boulder Batholith) | ||||||
| |||||||
| Host or associated | Host |
|---|---|
| Rock type | Plutonic Rock > Granitoid > Quartz Monzonite |
| (1) | -112.24117, 46.49157 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Boulder Batholith |
| Type of structure | Local |
| Structure description | Lee Mountain-Valley Forge Shear Zone |
| Strike | EAST |
|---|---|
| Dip | 80S |
| Length | 106.68M |
| Width | 1.22M |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Year of first production | 1885 |
| District name | Rimini District |
|---|
| Ownership category | National Forest |
|---|
| Type of workings | Underground |
|---|---|
| Overall depth | 99.06M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | DB02093 |
USGS BULL 527, P. 82-3.
USGS BULL 842, P. 257-58.
USGS PP 428, P. 55, PL. 1.
USGS PP 428, P. 55; USGS BULL 842, P. 257.
| Subject category | Comment text |
|---|---|
| Deposit | 2 ORE BODIES; EAST BODY IS 300 FT. LONG AND WORKED TO A DEPTH OF 200 FT., WEST ORE BODY IS 350 FT. LONG AND EXTENDS BELOW 600 FOOT LEVEL (200-300 FT. BELOW MIDDLE ADIT) |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-DEC-1979 | Elliott, James E. | U.S. Geological Survey | |
| Updater | 01-OCT-1981 | Wise, Kristine K. (Elliott, James E.) | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.