| Deposit ID | 10101752 |
|---|---|
| MRDS ID | D008249 |
| Record type | Site |
| Current site name | Big Chief 1 Claim |
| Alternate or previous names | Star Mine |
| Geographic coordinates: | -105.2614, 38.24862 (WGS84) |
|---|---|
| Elevation | 2499 |
| Location accuracy | 500(meters) |
| Relative position | EAST OF STATE ROUTE 143 ABOUT 1.5 MILES NORTH OF ILSE |
Political divisions (FIPS codes)
Custer(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Mount Tyndall(quadrangle 1:24,000 scale)
Canon City(quadrangle 1:100,000 scale)
Pueblo(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper Arkansas(hydrologic unit)
Upper Arkansas(hydrologic accounting unit)
Upper Arkansas(hydrologic subregion)
Arkansas-White-Red(hydrologic region)
Federal lands
Pike and San Isabel National Forests(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Colorado | Custer |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| 6th Principal | 021S | 070W | 06 | SW | Colorado |
| Commodity | Importance |
|---|---|
| Barium-Barite Critical | Primary |
| Silver | Primary |
| Lead | Secondary |
| Copper | Tertiary |
| Thorium | Tertiary |
| REE Critical | Tertiary |
| Uranium | Tertiary |
| Materials | Type of material |
|---|---|
| Barite | Ore |
| Chalcopyrite | Ore |
| Galena | Ore |
| Thorite | Ore |
| Quartz | Gangue |
| Siderite | Gangue |
| Result | .009% EQUIV. U, 0.002% U CHANNEL SAMPLE .04% EQUIV TH02 |
|---|
| Model code | 30 |
|---|---|
| USGS model code | 11d |
| Deposit model name | Thorium-rare-earth veins |
| Host or associated | Host | ||||
|---|---|---|---|---|---|
| Rock type | Metamorphic Rock > Gneiss | ||||
| Rock unit name | migmatite | ||||
| Rock description | Hornblende Gneiss Or Alaskite Granite Gneiss | ||||
| |||||
| (1) | -105.2614, 38.24862 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Wet Mountains |
| Type of structure | Local |
| Structure description | Ilse Fault |
| General form | TABULAR |
|---|---|
| Strike | N10W (VEIN) N70E (GNEISS) |
| Dip | 70E (VEIN) 85NW (GNEISS) |
| Thickness | 15.24M |
| Length | 121.92M |
| Width | 1.37M |
| Operation type | Surface-Underground |
|---|---|
| Development status | Past Producer |
| Commodity type | Both |
| Deposit size | Small |
| Significant | No |
| Year of first production | 1932 |
| Year of last production | 1932 |
| District name | Wet Mountains Area |
|---|
| Ownership category | National Forest |
|---|
| Type | Operator |
|---|---|
| Owner | Cotter Corp. |
| First year | 1960 |
| Type | Owner |
|---|---|
| Owner | Jensen, A. P. |
| Home office | Ilse Route, Canon City, Colorado |
| First year | 1953 |
| Type of workings | Surface/Underground |
|---|---|
| Overall depth | 15.24M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D008249 | |
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0080270020 | data consolidated into this record |
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0080270130 | data consolidated into this record |
BROCK, M.R. AND SINGEWALD, Q.D., 1968, GEOLOGIC MAP OF THE MOUNT TYNDALL QUADRANGLE, CUSTER COUNTY, COLORADO: USGS MAP GQ-596
DEL RIO, S.M., 1960, MINERAL RESOURCES OF COLORADO, FIRST SEQUEL: COLORADO MINERAL RESOURCES BOARD, P. 395.
DEL RIO, 1960, P. 395
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-DEC-1981 | Collins, Donna B. | Colorado Geological Survey |
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.