| Deposit ID | 10014229 |
|---|---|
| MRDS ID | D010906 |
| Record type | Site |
| Current site name | Free Coinage Mine |
| Related records | 10239334 |
| Geographic coordinates: | -108.10343, 37.76334 (WGS84) |
|---|---|
| Elevation | 2484 |
| Location accuracy | 100(meters) |
| Relative position | 6.3 MILES N 40 W FROM RICO |
Political divisions (FIPS codes)
Dolores(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Dolores Peak(quadrangle 1:24,000 scale)
Dove Creek(quadrangle 1:100,000 scale)
Cortez(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper Dolores(hydrologic unit)
Upper Colorado-Dolores(hydrologic accounting unit)
Upper Colorado-Dolores(hydrologic subregion)
Upper Colorado(hydrologic region)
Federal lands
San Juan National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Colorado | Dolores |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| New Mexico | 041N;040N | 011W;011W | 32;05 | SW OF SE (32); NW OF NE (05) | Colorado |
| Commodity | Importance |
|---|---|
| Silver | Primary |
| Gold | Primary |
| Lead | Secondary |
| Copper | Secondary |
| Zinc Critical | Tertiary |
| Materials | Type of material |
|---|---|
| Argentite | Ore |
| Chalcopyrite | Ore |
| Galena | Ore |
| Polybasite | Ore |
| Pyrargyrite | Ore |
| Sphalerite | Ore |
| Quartz | Gangue |
| Model code | 85 |
|---|---|
| USGS model code | 22c |
| Deposit model name | Polymetallic veins |
| Mark3 model number | 46 |
| Host or associated | Associated | ||||
|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock > Gabbro | ||||
| Rock unit name | Microgabbro | ||||
| Rock description | Microgabbro | ||||
| |||||
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Shale |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Siltstone |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Sandstone |
| Rock unit name | Cutler Formation;Dolores Formation |
| Rock description | Cutler Formation;Dolores Formation |
| (1) | -108.10343, 37.76334 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | San Juan Uplift, Paradox Basin |
| Type of structure | Local |
| Structure description | Rico Dome, Dunton Syncline, Emma Fault |
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| District name | Lone Cone (Dunton) District |
|---|
| Ownership category | National Forest |
|---|---|
| Area name | San Juan N. F. |
| Type | Owner-Operator |
|---|---|
| Owner | Warren E. Wright |
| Home office | Clifton, Co. |
| First year | 1979 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D010906 | |
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0080330074 |
BUSH, A.L., AND BROMFIELD, C.S., 1966, GEOLOGIC MAP OF THE DOLORES PEAK QUADRANGLE, DOLORES AND SAN MIGUEL COUNTIES, COLORADO: USGS MAP GQ-536.
BASTIN, E.S., 1922, SILVER ENRICHMENT IN THE SAN JUAN MOUNTAINS, COLORADO: USGS BULL. 735-D, P. 116-129.
COLORADO DIV. MINES INF. REPTS.
| Subject category | Comment text |
|---|---|
| Deposit | MINE DEVELOPED IN DOLORES FM RED BEDS ON PROBABLE VEIN THAT TRENDS NW-SE AND IS PARALLEL TO EMMA VEIN AND TO OTHER FISSURES THAT LIE TO SW BEYOND GRABEN. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-OCT-83 | Schwochow, Stephen D. | 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.