| Deposit ID | 10101933 |
|---|---|
| MRDS ID | DB02148 |
| Record type | Site |
| Current site name | Armstrong Mine |
| Geographic coordinates: | -112.2845, 46.48073 (WGS84) |
|---|---|
| Relative position | MINNEHAHA GULCH, 16 MILES SW OF HELENA; 4 MILES FROM RIMINI |
Political divisions (FIPS codes)
Lewis and Clark(county)
Montana(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Three Brothers(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 | 008N | 005W | 06 | NW OF NW | Montana |
| Commodity | Importance |
|---|---|
| Silver | Primary |
| Lead | Primary |
| Gold | Secondary |
| Zinc Critical | Secondary |
| Copper | Secondary |
| Uranium | Tertiary |
| Materials | Type of material |
|---|---|
| Chalcopyrite | Ore |
| Galena | Ore |
| Gold | Ore |
| Sphalerite | Ore |
| Pyrite | Gangue |
| Quartz | Gangue |
| Tourmaline | Gangue |
| Result | WEAK RADIOACTIVITY .007-.015 MR/HOUR ON ALL DUMPS. 9.52% PB, 7.6% ZN, 0.243 AU, 11.5 OZ/TON AG |
|---|
| 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) | -112.2845, 46.48073 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Boulder Batholith |
| Type of structure | Local |
| Structure description | Fault Zone Trending East, Dip 80n |
| Strike | EAST |
|---|---|
| Dip | 80-85N |
| Width | 3.66M |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| District name | Rimini District |
|---|
| Ownership category | National Forest |
|---|
| Year | 1940 | |||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Material | ORE | |||||||||||||||||||||||||||||||||||
| Accuracy | Accurate | |||||||||||||||||||||||||||||||||||
| Description | Ap_Grade: ^9.52% Pb, 7.6% Zn, .243 Au, 11.5 Oz/Ton Ag | |||||||||||||||||||||||||||||||||||
| ||||||||||||||||||||||||||||||||||||
| Type of workings | Underground |
|---|---|
| Length | 457.2M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | DB02148 |
USGS BULL 1151, P. 98, PL. 1.
US B. OF MINES, 1943, REPT. TO SEC. OF INT.
USGS BULL 842, P. 248.
USGS BULL 1151, P. 97; USBM REPT. TO SEC. INT.
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-DEC-1979 | Elliott, James E. | U.S. Geological Survey | |
| Updater | 01-DEC-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.