| Deposit ID | 10014082 |
|---|---|
| MRDS ID | D010706 |
| Record type | Site |
| Current site name | Eureka Mine |
| Alternate or previous names | Patented Claim: Eureka, Ms 5620 |
| Geographic coordinates: | -107.59869, 37.60057 (WGS84) |
|---|---|
| Elevation | 3804 |
| Relative position | 14.7 MILES S 14 E FROM SILVERTON |
Political divisions (FIPS codes)
La Plata(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Columbine Pass(quadrangle 1:24,000 scale)
Silverton(quadrangle 1:100,000 scale)
Durango(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper San Juan(hydrologic unit)
Upper San Juan(hydrologic accounting unit)
San Juan(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)
Weminuche Wilderness(Wilderness)
Wilderness FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Colorado | La Plata |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| New Mexico | 039N | 007W | 35 | SE | Colorado |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Silver | Primary |
| Copper | Secondary |
| Lead | Secondary |
| Zinc Critical | Tertiary |
| Manganese Critical | Tertiary |
| Materials | Type of material |
|---|---|
| Sphalerite | Ore |
| Fluorite | Gangue |
| Quartz | Gangue |
| Rhodochrosite | Gangue |
| Result | STEVEN AND OTHERS' (1969) ASSAY OF SELECTED DUMP SAMPLE CONTAINED 0.01 OZ/TON AU, 1.40 OZ/TON AG, 1.04 % CU, 3.40 % CU, 3.40 % PB, 5.98 % ZN. SEMIQUANTITATIVE SPECTROGRAPHIC ANALYSES OF THREE SULFIDE-BEARING QUARTZ VEIN SAMPLES SHOWED 10 TO 200 PPM TI, 1500 TO GT 5000 PPM MN, 30 TO 150 PPM AG, LT 200 TO 700 PPM AS, 70 TO 3000 PPM BA, LT 10 TO 200 PPM BI, LT 500 PPM CD, LT 5 TO 5 PPM CR, 700 TO 5000 PPM CU, 7 TO 15 PPM MO, GT 20000 PPM PB, 150 TO 3000 PPM SB, LT 10 TO 150 PPM SN, LT 100 TO 150 PPM SN, LT 100 TO 150 PPM SR, 10 TO 20 PPM V, LT 50 TO 70 PPM W, GT 10000 PPM ZN |
|---|---|
| Result | CHEMICAL ANALYSES SHOWED 0.06 TO 0.10 PPM AU, 860 TO 7000 PPM CU, 10000 TO 14000 PPM PB, 120000 TO 250000 PPM ZN, GT 100 PPM SB. |
| 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 > Quartz Monzonite | ||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||
| Host or associated | Associated | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite | ||||||||||||
| |||||||||||||
| Host or associated | Associated | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Granitoid > Granite | ||||||||||||||||||||||||||||||||
| Rock unit name | Eolus Granite;Intrusive Bodies And Related Rocks (Younger And Older Bodies Of Chicago Basin Stock) | ||||||||||||||||||||||||||||||||
| Rock description | Eolus Granite;Intrusive Bodies And Related Rocks (Younger And Older Bodies Of Chicago Basin Stock) | ||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||
| Host or associated | Host | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Granitoid > Quartz Monzonite | ||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||
| Host or associated | Host | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Granitoid > Granite | ||||||||||||||||||||||||||||||||
| Rock unit name | Eolus Granite | ||||||||||||||||||||||||||||||||
| Rock description | Eolus Granite | ||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||
| (1) | -107.59869, 37.60057 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | San Juan Uplift, San Juan Basin, San Juan Volcanic Field |
| Type of structure | Local |
| Structure description | Needle Mtns Uplift, Chicago Basin Stock, Eolus Batholith, Trimble Stock |
| Thickness | 0.91M |
|---|
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discoverer | William Valliant (Claimant) |
| District name | Needle Mountain (Tacoma, Florida, Vallecito) District |
|---|
| Ownership category | National Forest |
|---|---|
| Area name | San Juan N. F. |
| Type of workings | Underground |
|---|---|
| Length | 152.4M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D010706 |
SCHMITT, L.J., AND RAYMOND, W.H., 1977, GEOLOGY AND MINERAL DEPOSITS OF THE NEEDLE MOUNTAINS DISTRICT, SOUTHWESTERN COLORADO: USGS BULL. 1434, 40 P.
STEVEN, T.A., AND OTHERS, 1969, MINERAL RESOURCES OF THE SAN JUAN PRIMITIVE AREA, COLORADO: USGS BULL. 1261-F, P.30-32, 55-67, 102, 162-163.
CROSS, WHITMAN, AND OTHERS, 1905, DESCRIPTION OF THE NEEDLE MOUNTAINS QUADRANGLE, COLORADO: USGS FOLIO 131.
BLM MINERAL SURVEY MS 5620
| Subject category | Comment text |
|---|---|
| Deposit | MINE DEVELOPED ON SMALL QUARTZ VEIN TRENDING N 20 W, 45 TO 65 NE, AND LYING IN GENERALLY NNW-SSE-TRENDING REGIONAL RECTANGULAR FRACTURE SYSTEM. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-JUL-1983 | 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.