| Deposit ID | 10240537 |
|---|---|
| MAS/MILS ID | 0081170115 |
| Record type | Site |
| Current site name | Middlesex Mine |
| Point of reference | Main Entrance |
|---|---|
| Geographic coordinates: | -105.9659, 39.47059 (WGS84) |
| Elevation | 3438 |
| Location accuracy | 100(meters) |
Political divisions (FIPS codes)
Summit(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Boreas Pass(quadrangle 1:24,000 scale)
Bailey(quadrangle 1:100,000 scale)
Denver(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Blue(hydrologic unit)
Colorado Headwaters(hydrologic accounting unit)
Colorado Headwaters(hydrologic subregion)
Upper Colorado(hydrologic region)
Federal lands
White River National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Colorado | Summit |
| Commodity | Importance |
|---|---|
| Tungsten Critical | Primary |
| Main Entrance (1) | Colorado Group |
|---|
| Operation type | Underground |
|---|---|
| Development status | Past Producer |
| Commodity type | Metallic |
| Significant | No |
| Ownership category | National Forest |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0081170115 |
OWNER- MIDDLESEX MINING & MILLING CO
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 17-NOV-1983 | Intermountain Field Operations Center (IFOC) | U.S. Bureau of Mines |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
These are landing pages for further research — the state agencies don't currently expose per-mine deep links.