| Deposit ID | 10087901 |
|---|---|
| MRDS ID | D010714 |
| Record type | Site |
| Current site name | Sheridan Mine |
| Alternate or previous names | Patented Claim: Sheridan, Ms 19258 |
| Geographic coordinates: | -107.62786, 37.60223 (WGS84) |
|---|---|
| Elevation | 3347 |
| Relative position | 14.2 MILES S 8 E FROM SILVERTON |
Political divisions (FIPS codes)
La Plata(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Mountain View Crest(quadrangle 1:24,000 scale)
Silverton(quadrangle 1:100,000 scale)
Durango(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Animas(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 | 34 | W2 | Colorado |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Silver | Primary |
| Copper | Primary |
| Lead | Secondary |
| Zinc Critical | Secondary |
| Materials | Type of material |
|---|---|
| Chalcopyrite | Ore |
| Sphalerite | Ore |
| Quartz | Gangue |
| Result | STEVEN AND OTHERS' (1969) ASSAYS OF UPPER DUMP SHOWED 0.02 OZ/TON AU, 2.70 OZ/TON AG, 0.26% CU, 0.52% ZN |
|---|---|
| Result | 5-FT CHIP SAMPLE FROM BACK OF UPPER PORTAL CONTAINED 0.02 OZ/TON AU, 4.86 OZ/TON AG, 0.51% CU, 0.40% PB, 0.76% ZN |
| Result | DUMP AT LOWER ADIT CONTAINED 0.01 OZ/TON AU, 3.60 OZ/TON AG, 0.43% CU. SEMIQUANTITATIVE SPECTROGRAPHIC ANALYSIS OF SULFIDE-BEARING QUARTZ VEIN MATERIAL SHOWED 1000 PPM TI, 50 PPM MN, 70 PPM AG, 700 PPM AS, 500 PPM BA, 1000 PPM BI, 50 PPM CD, 5 PPM CR, 3000 PPM CU, 5 PPM MO, 3000 PPM PB, 1500 PPM SB, 150 PPM SN, 200 PPM SR, 20 PPM V, LT 50 PPM W, 5000 PPM ZN |
| Result | CHEMICAL ANALYSIS SHOWED 0.4 PPM AU, 7800 PPM CU, 4000 PPM PB, 6000 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 > Granite | ||||||||||||||||||||
| Rock unit name | Eolus Granite | ||||||||||||||||||||
| Rock description | Eolus Granite | ||||||||||||||||||||
| |||||||||||||||||||||
| (1) | -107.62786, 37.60223 |
|---|
| 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, Eolus Batholith, Chicago Basin Stock, Trimble Stock |
| Thickness | 9.14M |
|---|
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discoverer | Joseph W. Uncapher And Others (Claimants) |
| District name | Needle Mountain (Tacoma, Florida, Vallecito) District |
|---|
| Ownership category | National Forest |
|---|---|
| Area name | San Juan N. F. |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D010714 |
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, 99, 166-167.
CROSS, WHITMAN, AND OTHERS, 1905, DESCRIPTION OF THE NEEDLE MOUNTAINS QUADRANGLE, COLORADO: USGS FOLIO 131.
BLM MINERAL SURVEY MS 19258
| Subject category | Comment text |
|---|---|
| Deposit | SMALL QUARTZ VEIN TRENDS N 10 W, 60 TO 90 NE AND LIES IN NNW-SSE-TRENDING REGIONAL FRACTURE SYSTEM. ZONE IS APPROX 30 FT WIDE AT UPPER PORTAL BUT TAPERS TO 10 FT AT POINT 250 FT NORTHWARD. |
| 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.