| Deposit ID | 10014725 |
|---|---|
| MRDS ID | D011621 |
| Record type | Site |
| Current site name | Silver Chord Mine |
| Alternate or previous names | Patented Claim: Silver Chord, Ms 1251 |
| Related records | 10118474 |
| Geographic coordinates: | -107.4673, 38.01472 (WGS84) |
|---|---|
| Elevation | 3213 |
| Relative position | 8.2 MILES S 84 W FROM LAKE CITY |
Political divisions (FIPS codes)
Hinsdale(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Uncompahgre Peak(quadrangle 1:24,000 scale)
Montrose(quadrangle 1:100,000 scale)
Montrose(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper Gunnison(hydrologic unit)
Gunnison(hydrologic accounting unit)
Gunnison(hydrologic subregion)
Upper Colorado(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Colorado | Hinsdale |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| New Mexico | 044N | 006W | 36 | E2 | Colorado |
| Commodity | Importance |
|---|---|
| Silver | Primary |
| Copper | Primary |
| Lead | Primary |
| Zinc Critical | Tertiary |
| Materials | Type of material |
|---|---|
| Chalcopyrite | Ore |
| Galena | Ore |
| Pyrite | Ore |
| Sphalerite | Ore |
| Quartz | Gangue |
| Host or associated | Associated | ||||
|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Granitoid > Monzonite | ||||
| |||||
| Host or associated | Associated |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite |
| Rock unit name | Eureka Member Of Sapinero Mesa Tuff;Intrusive Rocks--Monzonite Porphyry;Intrusive Rocks--Rhyolite |
| Rock description | Eureka Member Of Sapinero Mesa Tuff;Intrusive Rocks--Monzonite Porphyry;Intrusive Rocks--Rhyolite |
| Host or associated | Host |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite |
| (1) | -107.4673, 38.01472 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | San Juan Volcanic Field, San Juan Depression |
| Type of structure | Local |
| Structure description | San Juan-Uncompahgre Calderas, Lake City Caldera, Eureka Graben |
| Thickness | 0.46M |
|---|
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1882 |
| Discoverer | Silver Chord Consolidated Mining Co. (Claimant) |
| District name | Galena (Henson Creek) District |
|---|
| Ownership category | Private |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D011621 |
IRVING, J.D., AND BANCROFT, HOWLAND, 1911, GEOLOGY AND ORE DEPOSITS NEAR LAKE CITY, COLORADO: USGS BULL, 478, P. 80.
LIPMAN, P.W., 1976, GEOLOGIC MAP OF THE LAKE CITY CALDERA AREA, WESTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-962.
BLM MINERAL SURVEY MS 1251
| Subject category | Comment text |
|---|---|
| Deposit | MINE LIES NW OF LAKE CITY CALDERA RIM IN UNCOMPAHGRE CALDERA INFILLE ROCKS CONSISTING OF EUREKA MEMBER RHYOLITE. NW OF MINE, SEQUENCE IS INTRUDED AND ALTERED BY MONZONITE PORPHYRY AND RHYOLITE PLUGS. VEIN LIES IN SLACK'S (1980) QUARTZ/BASE-METAL ASSEMBLAGE, INNER QUARTZ-CHALCOPYRITE ZONE. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-APR-1984 | Schwochow, Stephen D. | Colorado Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
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