| Deposit ID | 10014079 |
|---|---|
| MRDS ID | D010701 |
| Record type | Site |
| Current site name | Black Horse Mine |
| Alternate or previous names | Patented Claim: Black Horse, Ms 427 |
| Geographic coordinates: | -107.60341, 37.59279 (WGS84) |
|---|---|
| Elevation | 3770 |
| Relative position | 15 MILES S 13 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 | 038N | 007W | 02 | W2 OF NE | Colorado |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Silver | Primary |
| Copper | Secondary |
| Lead | Secondary |
| Zinc Critical | Tertiary |
| Materials | Type of material |
|---|---|
| Chalcopyrite | Ore |
| Sphalerite | Ore |
| Fluorite | Gangue |
| Quartz | Gangue |
| Result | STEVEN AND OTHERS' (1969) ASSAY OF 16-INCH SAMPLE FROM SOUTH FACE OF SUBLEVEL CONTAINED 0.02 OZ/TON AU, 3.94 OZ/TON AG, 0.63% CU, 0.72% ZN |
|---|---|
| Result | 8-INCH SAMPLE FROM NORTH SIDE OF SUBLEVEL CONTAINED 0.01 OZ/TON AU, 3.44 OZ/TON AG, 0.16% CU, 1.04% PB, 1.20% ZN |
| Result | SELECTED DUMP SAMPLE FROM LOWER PORTAL CONTAINED 0.04 OZ/TON AU, 37.56 OZ/TON AG, 0.20% CU, 0.36% PB, 0.65% ZN. SEMIQUANTITATIVE SPECTROGRAPHIC ANALYSES OF TWO SULFIDE-BEARING QUARTZ VEIN SAMPLES CONTAINED 30 AND 150 PPM TI, 70 PPM MN, 200 TO 300 PPM AG, 300 TO 500 PPM AS, 1000 TO 1500 PPM BA, 200 TO 500 PPM BI, LT 20 PPM CD, 5 PPM CR, 7000 TO 20000 PPM CU, 15 TO 20 PPM MO, 500 TO 1000 PPM PB, 700 PPM SB, LT 10 PPM SN, LT 100 TO 100 PPM SR, LT 10 TO 10 PPM V, LT 50 PPM W, 700 PPM ZN |
| Result | CHEMICAL ANALYSES CONTAINED 0.50 PPM AU, 7000 TO 17000 PPM CU, 1300 TO 2500 PPM PB, 800 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 > 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 | Trimble Granite;Intrusive Bodies And Related Rocks (Younger And Older Bodies Of Chicago Basin Stock | ||||||||||||||||||||||||||||||||
| Rock description | Trimble 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 | Trimble Granite | ||||||||||||||||||||||||||||||||
| Rock description | Trimble Granite | ||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||
| (1) | Granitic rocks of 1400-m.y. age group |
|---|
| 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 |
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discoverer | W.E. Webb 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 | D010701 |
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, 104-105, 162-163.
CROSS, WHITMAN, AND OTHERS, 1905, DESCRIPTION OF THE NEEDLE MOUNTAINS QUADRANGLE, COLORADO: USGS FOLIO 131.
BLM MINERAL SURVEY MS 427
| Subject category | Comment text |
|---|---|
| Deposit | QUARTZ VEIN TRENDS N 10 E, DIP UNKNOWN BUT PROBABLY STEEPLY NE, AND PART OF GENERALLY NORTH-SOUTH-OR NNW-SSE-TRENDING REGIONAL 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.