| Deposit ID | 10101859 |
|---|---|
| MRDS ID | D010638 |
| Record type | Site |
| Current site name | Emma Mine |
| Alternate or previous names | Patented Claim: Emma, Ms 12752 |
| Geographic coordinates: | -106.53866, 37.38558 (WGS84) |
|---|---|
| Elevation | 3359 |
| Location accuracy | 250(meters) |
| Relative position | 4.3 MILES S 49 E FROM SUMMITVILLE |
Political divisions (FIPS codes)
Conejos(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Summitville(quadrangle 1:24,000 scale)
Antonito(quadrangle 1:100,000 scale)
Durango(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Alamosa-Trinchera(hydrologic unit)
Rio Grande Headwaters(hydrologic accounting unit)
Rio Grande Headwaters(hydrologic subregion)
Rio Grande(hydrologic region)
Federal lands
Rio Grande National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Colorado | Conejos |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| New Mexico | 036N | 004E | 03 | N2 OF SE | Colorado |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Silver | Primary |
| Copper | Tertiary |
| Materials | Type of material |
|---|---|
| Gold | Ore |
| Petzite | Ore |
| Tetrahedrite | 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 > Granitoid > Monzonite | ||||
| |||||
| Host or associated | Associated |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Quartz Latite |
| Rock unit name | Intrusive Rocks--Monzonite (Alamosa River Stock) |
| Rock description | Intrusive Rocks--Monzonite (Alamosa River Stock) |
| Host or associated | Associated |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite |
| Host or associated | Host |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Quartz Latite |
| Rock unit name | La Jara Canyon Member Of Treasure Mountain Tuff;Summitville Andesite |
| Rock description | La Jara Canyon Member Of Treasure Mountain Tuff;Summitville Andesite |
| (1) | -106.53866, 37.38558 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | San Juan Volcanic Field |
| Type of structure | Local |
| Structure description | Platoro Caldera, Summitville Caldera, Alamosa River Stock, Cornwall Fault |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1881 |
| District name | Decatur West (Stunner) District |
|---|
| Ownership category | Private |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D010638 |
PATTON, H.B., 1917, GEOLOGY AND ORE DEPOSITS OF THE PLATORO-SUMMITVILLE MINING DISTRICT, COLORADO: CGS BULL. 13.
LIPMAN, P.W., 1974, GEOLOGIC MAP OF THE PLATORO CALDERA AREA, SOUTHEASTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-828.
BLM MINERAL SURVEY MS 12752
| Subject category | Comment text |
|---|---|
| Deposit | DEPOSIT LIKELY IS QUARTZ VEIN TRENDING NW-SE, BUT IS APPARENTLY LOCATED IN LA JARA CANYON MBR ASH FLOW FILL IN PLATORO CALDERA JUST SOUTH OF CORNWALL FAULT THAT TRUNCATES CORNWALL RESURGENT BLOCK AND MARKS SOUTH BOUNDARY OF SUMMITVILLE CALDERA. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-JUN-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.