| Deposit ID | 10263976 |
|---|---|
| MAS/MILS ID | 0080850038 |
| Record type | Site |
| Current site name | Twilight No. 1 |
| Point of reference | Ore Body |
|---|---|
| Geographic coordinates: | -108.83428, 38.44359 (WGS84) |
| Elevation | 1891 |
Political divisions (FIPS codes)
Montrose(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Red Canyon(quadrangle 1:24,000 scale)
Nucla(quadrangle 1:100,000 scale)
Moab(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Lower Dolores(hydrologic unit)
Upper Colorado-Dolores(hydrologic accounting unit)
Upper Colorado-Dolores(hydrologic subregion)
Upper Colorado(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Colorado | Montrose |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| New Mexico | 048 N | 018 W | 02 | Colorado |
| Commodity | Importance |
|---|---|
| Uranium | Tertiary |
| Vanadium Critical | Tertiary |
| Materials | Type of material |
|---|---|
| Carnotite | Unknown |
| Tyuyamunite | Unknown |
| Uraninite | Unknown |
| Ore Body (1) | -108.83428, 38.44359 |
|---|
| Thickness | 0.8M | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| |||||||||||||||||||||||||
| Operation type | Underground |
|---|---|
| Development status | Past Producer |
| Commodity type | Metallic |
| Significant | No |
| Year of first production | 1969 |
| District name | Uravan |
|---|
| Type of mineral rights | Located Claim |
|---|
| Type | Owner |
|---|---|
| Owner | Union Carbide Corp. |
| ID | 501714 |
| Home office | Colorado |
| Year | 1975 |
| Type | Operator |
|---|---|
| Owner | Clark, Oral |
| ID | 501714 |
| Home office | 2317 Arriba Ct., Grand Junction, Co 81501 |
| Year | 1975 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0080850038 | |
| Mine Safety and Health Administration | MSHA | MSHA | 0501714 |
DATA FROM COLO. BUREAU OF MINES ANNUAL OPERATOR'S REPORTS.
OWN/OP:U S BUREAU OF MINES SPEC
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 27-FEB-1984 | Minecom | U.S. Bureau of Mines |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
| Status | Abandoned since 05/23/1979 |
|---|---|
| MSHA mine ID | 0501714 |
| Mine name (MSHA) | Twilight No 1 |
| Current operator | U S Bureau Of Mines |
| Current controller (parent) | United States Government |
| Mine type | Underground (Metal / non-metal) |
MSHA cross-reference per the original MRDS record. Mine status and operator reflect MSHA's last published Mines export (February 2025); MSHA's public bulk feed has been unavailable since, so this may be out of date. See the Mine Data Retrieval System for current status.
Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.
These are landing pages for further research — the state agencies don't currently expose per-mine deep links.