| Deposit ID | 10019579 |
|---|---|
| MRDS ID | DC10853 |
| Record type | Site |
| Current site name | Lexington Mine |
| Geographic coordinates: | -112.53561, 46.02768 (WGS84) |
|---|---|
| Relative position | 2.0 KM NE OF BIG BUTTE |
Political divisions (FIPS codes)
Silver Bow(county)
Montana(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Butte North(quadrangle 1:24,000 scale)
Butte North(quadrangle 1:100,000 scale)
Butte(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper Clark Fork(hydrologic unit)
Pend Oreille(hydrologic accounting unit)
Kootenai-Pend Oreille-Spokane(hydrologic subregion)
Pacific Northwest(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Montana | Silver Bow |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Montana Principal | 003N | 008W | 12 | Montana |
| Commodity | Importance |
|---|---|
| Silver | Primary |
| Gold | Primary |
| Lead | Secondary |
| Copper | Secondary |
| Zinc Critical | Secondary |
| Manganese Critical | Secondary |
| Beryllium Critical | Tertiary |
| Materials | Type of material |
|---|---|
| Argentite | Ore |
| Chalcopyrite | Ore |
| Galena | Ore |
| Gold | Ore |
| Rhodochrosite | Ore |
| Rhodonite | Ore |
| Sphalerite | Ore |
| Helvite | Gangue |
| Pyrite | Gangue |
| Quartz | Gangue |
| Result | AVERAGE FOR MINE IS 5.3% CU, 1OZ AU TO 100 OZ AG; HIGH GRADE ORE 19.8 % CU, 43.3 OZ AG, T 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) | -112.53561, 46.02768 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Boulder Batholith |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| District name | Butte District |
|---|
| Type | Owner-Operator |
|---|---|
| Owner | The Anaconda Co. |
| Home office | Hennessy Bldg., Butte, Mt. |
| Type of workings | Underground |
|---|---|
| Overall depth | 365.76M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | DC10853 |
USGS PP 74, P. 240, PL. X.
MBMG BULL 14, P. 40.
USGS-USBM MINERAL YEARBOOKS, 1905, 1939, 1955, 1957
USBM R1 7148, P. 144-45.
USBM R1 7148; USGS-USBM MINERAL YEARBOOKS; MBMG BULL. 14.
| Subject category | Comment text |
|---|---|
| Deposit | 3 VEINS, ALLIE BROWN, WAPPELLO, AND LA PLATA. THE ALLIE BROWN OUTCROPS 400 FT N OF THE SHAFT. ITS STRIKE IS WNW, ITS DIP IS NEARLY VERTICAL S. MAX. WIDTH IS 20 FT, IN PLACES IT INCLOSES LENS-SHAPED HORSES OF ALTERED GRANITE. THE WAPPELO VEIN CONSISTS OF A NUMBER OF CLOSE PARALLEL VEINS. MAXIMUM WIDTH OF 15 FT, DIP IS 55-70 S. THE LA PLATA LODE CONSISTS OF A NUMBER OF SHORT CONNECTING VEINS. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAR-1974 | Unknown | U.S. Geological Survey | |
| Updater | 01-FEB-1984 | Wise, Kristine K. (Elliott, James E.) | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.