| Deposit ID | 10110454 |
|---|---|
| MRDS ID | W015674 |
| MAS/MILS ID | 0160230079 |
| Record type | Site |
| Current site name | Last Chance Mine |
| Geographic coordinates: | -113.57948, 43.5863 (WGS84) |
|---|---|
| Elevation | 1920 |
| Relative position | 14 MI WSW OF ARCO |
Political divisions (FIPS codes)
Butte(county)
Idaho(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Champagne Creek(quadrangle 1:24,000 scale)
Arco(quadrangle 1:100,000 scale)
Idaho Falls(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Lake Walcott(hydrologic unit)
Upper Snake(hydrologic accounting unit)
Upper Snake(hydrologic subregion)
Pacific Northwest(hydrologic region)
Federal lands
Bureau of Land Management(Bureau of Land Management ID)
Bureau of Land Management ID BLM(Type of land area)
BLM(Federal land areas administered by BLM)
| Country | State | County |
|---|---|---|
| United States | Idaho | Butte |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Boise | 003N | 024E | 15 | NESE | Idaho |
| Commodity | Importance |
|---|---|
| Zinc Critical | Primary |
| Lead | Primary |
| Silver | Primary |
| Copper | Secondary |
| Bismuth Critical | Tertiary |
| Gold | Tertiary |
| Materials | Type of material |
|---|---|
| Cerargyrite | Ore |
| Chalcanthite | Ore |
| Chalcopyrite | Ore |
| Galena | Ore |
| Sphalerite | Ore |
| Tetrahedrite | Ore |
| Wurtzite | Ore |
| Barite | Gangue |
| Chalcedony | Gangue |
| Dickite | Gangue |
| Marcasite | Gangue |
| Melanterite | Gangue |
| Pyrite | Gangue |
| Quartz | Gangue |
| Result | NEARLY PURE ZINC SULFIDE GAVE 3.6 OZ AG/TON |
|---|---|
| Result | PURE GALENA GAVE 2.6 OZ AG/TON |
| Result | THE SPAR VEIN ORE ASSAYED 125 OZ AG/TON, 4% CU |
| Host or associated | Associated | ||||||
|---|---|---|---|---|---|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff | ||||||
| |||||||
| Host or associated | Associated |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite |
| Rock unit name | Challis Volcanics-Porphyritic Andesite, Bedded Tuff |
| Rock description | Challis Volcanics-Porphyritic Andesite, Bedded Tuff |
| Host or associated | Host |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff |
| Host or associated | Host |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite |
| (1) | -113.57948, 43.5863 |
|---|
| General form | IRREGULAR STRINGERS, BUNCHES |
|---|---|
| Strike | N 35 DEG E |
| Dip | 85 DEG NW |
| Thickness | 9.14M |
| Length | 44.2M |
| Width | 2.44M |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| District name | Lava Creek District |
|---|
| Ownership category | BLM Administrative Area |
|---|
| Type | Owner-Operator |
|---|---|
| Owner | Era Mining And Development Co. |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | W015674 | |
| Idaho Geological Survey | Idaho Mines and Prospects | IMP | IF_131 | http://www.idahogeology.org/ |
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0160230079 | data consolidated into this record |
Anderson, A. L., 1929, Geology And Ore Deposits Of The Lava Creek District, Idaho: Idaho Bureau Of Mines And Geology Pamphlet 32, 70 P.
Anderson, A. L., 1947, Geol. Soc. America Bull, V. 58, No. 5, P. 451-482
V.E. Mitchell, Et. Al; Mines And Prospects Map Series, 1981, Idaho Falls Quad, Location No. 118
| Subject category | Comment text |
|---|---|
| Deposit | Several Veins - 2 Major Veins Are Last Chance And Spar, The Spar Being Described Above; Last Chance Vein Strikes N 20-50 Deg E, Dips 85 Deg Nw, Is 90-100 Ft Long, 12 Ft Thick |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAR-1977 | Siefken, Robert R. (Miller, Pat) | U.S. Geological Survey | |
| Reporter | 02-OCT-1990 | Western Field Operations Center (WFOC) | U.S. Bureau of Mines |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.