| Deposit ID | 10048780 |
|---|---|
| MRDS ID | MP90005 |
| Record type | Site |
| Current site name | Ophir |
| Related records | 10119070 |
| Geographic coordinates: | -107.8087, 37.83307 (WGS84) |
|---|---|
| Relative position | EASTERN SAN MIGUEL COUNTY 5 TO 7 MILES WEST OF THE SILVERTON CALDERA |
Political divisions (FIPS codes)
San Miguel(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Ophir(quadrangle 1:24,000 scale)
Silverton(quadrangle 1:100,000 scale)
Durango(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
San Miguel(hydrologic unit)
Upper Colorado-Dolores(hydrologic accounting unit)
Upper Colorado-Dolores(hydrologic subregion)
Upper Colorado(hydrologic region)
Federal lands
Grand Mesa, Uncompahgre and Gunnison National Forests(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Colorado | San Miguel |
| Commodity | Importance |
|---|---|
| Lead | Primary |
| Copper | Primary |
| Silver | Primary |
| Zinc Critical | Primary |
| Gold | Primary |
| Materials | Type of material |
|---|---|
| Chalcopyrite | Ore |
| Galena | Ore |
| Hematite | Ore |
| Magnetite | Ore |
| Pyrite | Ore |
| Sphalerite | Ore |
| Barite | Gangue |
| Calcite | Gangue |
| 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 > Mafic Intrusive Rock > Diorite |
| Host or associated | Host |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Pyroclastic Rock > Volcanic Breccia (Agglomerate) |
| Rock unit name | Silverton Volcanic Series;San Juan Formation;Telluride Conglomerate |
| Rock description | Silverton Volcanic Series;San Juan Formation;Telluride Conglomerate |
| (1) | -107.8087, 37.83307 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Paradox Basin Of Southeastern Utah And Southwestern Colorado (Intracratonic Basin) Trending Northwest-Southeast Elongate Structure. Gypsum Valley Anticline, Dolores Anticline: Fold Axis Trending Northwest-Southeast |
| Type of structure | Local |
| Structure description | Series Of Northwest Trending Fractures From The Silverton Caldera, But The Most Productive Veins Trend Towards The West |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Large |
| Significant | Yes |
| Year of first production | 1878 |
| District name | Ophir |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | MP90005 |
U.S. BUREAU OF MINES, MINERALS YEARBOOK, 1932-1945.
KOSCHMANN, A.H., AND BERGENDAHL, M.H., 1968, PRINCIPAL GOLD-PRODUCING DISTRICTS OF THE UNITED STATES: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 610, 283 P.
FRIEDMAN, JULES D., AND HELER, JOAN S., TECTONIC TRENDS OF THE NORTHERN PART OF THE PARADOX BASIN, SOUTHEASTER UTAH AND SOUTHWESTERN COLORADO, AS DERIVED FROM LANDSAT MULTISPECTRAL SCANNER IMAGING AND GEOPHYSICAL AND GEOOGIC MAPPING: US. GEOLOGICAL SURVEY BULLETIN 200-C,D, 40 P.
MOSIER, D.L., SINGER, D.A., AND SALEM, B.B., 1983, GEOLOGIC AND GRADE-TONNAGE INFORMATION ON VOLCANIC-HOSTED COPPER-ZINC-LEAD MASSIVE SULFIDE DEPOSITS: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 83-89, 78 P.
USBM YB (1932-45)
| Subject category | Comment text |
|---|---|
| Deposit | DISTRICT MAY BE CALLED IRON SPRINGS |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 17-JUL-1995 | Sachiko Tanikawa | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
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