| Deposit ID | 10078273 |
|---|---|
| MRDS ID | W026527 |
| Record type | Site |
| Current site name | Excelsior Mine |
| Alternate or previous names | Excelsior Lode Mine |
| Geographic coordinates: | -112.97922, 45.14934 (WGS84) |
|---|---|
| Elevation | 1811 |
| Relative position | 1 MILE SOUTHEAST OF BANNACK |
Political divisions (FIPS codes)
Beaverhead(county)
Montana(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Bannack(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 | 011W | 08 | Montana |
| Commodity | Importance |
|---|---|
| Silver | Primary |
| Gold | Primary |
| Copper | Primary |
| Bismuth Critical | Tertiary |
| Manganese Critical | Tertiary |
| Tellurium Critical | Tertiary |
| Materials | Type of material |
|---|---|
| Bornite | Gangue |
| Calcite | Gangue |
| Garnet | Gangue |
| Quartz | Gangue |
| Result | VEIN CHIP SAMPLE NEAR OLD SHAFT ASSAYED 0.001 OZ AU/TON, 0.05 OZ AG/TON, AND 0.30% CU. |
|---|
| Host or associated | Associated | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock > Diorite | ||||||||
| Rock unit name | Bannack Stock | ||||||||
| Rock description | Bannack Stock | ||||||||
| |||||||||
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Carbonate > Limestone |
| Rock unit name | Madison |
| Rock description | Madison |
| (1) | -112.97922, 45.14934 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Eastward Thrusting |
| Type of structure | Local |
| Structure description | Step Faulting, Fractures |
| General form | IRREGULAR SHOOTS |
|---|---|
| Strike | S 37 E |
| Dip | SW |
| Width | 2.44M |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Year of first production | 1902 |
| District name | Bannack District |
|---|
| Ownership category | Private |
|---|
| Type | Operator |
|---|---|
| Owner | Grand Deposit Mining Co. |
| Type | Owner |
|---|---|
| Owner | Phillip And Fred Shenon |
| Year | 1902 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Material | ORE | ||||||||||||||
| Accuracy | Accurate | ||||||||||||||
| Description | Ap_Grade: ^202 Short Tons Of Ore | ||||||||||||||
| |||||||||||||||
| Type of workings | Underground |
|---|---|
| Length | 457.2M |
| Overall depth | 91.44M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | W026527 |
USGS BULL 574, P. 74-75.
MBMG BULL 85, P. 80-81.
MBMG BULL 6, P. 40.
1914 COMPILE WINCHELL, A.N., U.S.G.S. BULL. 574
1931 COMPILE M.B.M.G. BULL. 6
1965 GEOLMAP LOWELL, W.R., U.S.G.S. MAP I-433
1972 RECON M.B.M.G. BULL. 85
MBMG BULL 85, USGS BULL 574
| Subject category | Comment text |
|---|---|
| Deposit | ORE OCCURS ON LIMESTONE SIDE OF GARNET ZONE. IT IS OFFSET TO THE SOUTHWEST BY A SERIES OF STEP FAULTS. MINERALIZED FRACTURES OCCUR ALONG OR NEAR THE GRANODIORITE CONTACT THE CONTACT STRIKES N35W AND DIPS 45W |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAR-1977 | Mc Kenzie, Craig L.; R. B. Berg | U.S. Geological Survey | |
| Updater | 01-JUL-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.