| Deposit ID | 10014714 |
|---|---|
| MRDS ID | D011605 |
| Record type | Site |
| Current site name | Dolly Varden Mine |
| Alternate or previous names | Varden Belle Mine, Patented Claim: Dolly Varden, MS 172 |
| Related records | 10215225 |
| Geographic coordinates: | -107.53675, 37.98694 (WGS84) |
|---|---|
| Elevation | 3719 |
| Relative position | 12.3 MILES S 76 W FROM LAKE CITY |
Political divisions (FIPS codes)
Hinsdale(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Handies Peak(quadrangle 1:24,000 scale)
Silverton(quadrangle 1:100,000 scale)
Durango(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 | 043N | 006W | 16 | NW | Colorado |
| Commodity | Importance |
|---|---|
| Silver | Primary |
| Lead | Secondary |
| Copper | Secondary |
| Zinc Critical | Tertiary |
| Antimony Critical | Tertiary |
| Materials | Type of material |
|---|---|
| Chalcocite | Ore |
| Chalcopyrite | Ore |
| Galena | Ore |
| Pyrargyrite | Ore |
| Sphalerite | Ore |
| Stephanite | Ore |
| Quartz | Gangue |
| Host or associated | Associated | ||||||
|---|---|---|---|---|---|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite | ||||||
| |||||||
| Host or associated | Associated |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Quartz Latite |
| Host or associated | Associated |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite |
| Rock unit name | Porphyritic Andesite Of Pyroxene Andesite Member Of Silverton Volcanics;Fish Canyon Tuff;Rhyolite Of Volcanics Of Uncompahgre Peak;Intrusive Rocks--Rhyolite |
| Rock description | Porphyritic Andesite Of Pyroxene Andesite Member Of Silverton Volcanics;Fish Canyon Tuff;Rhyolite Of Volcanics Of Uncompahgre Peak;Intrusive Rocks--Rhyolite |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Sandstone |
| Host or associated | Host |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite |
| Rock unit name | Tuffaceous Sandstone Of Henson Member Of Silverton Volcanics |
| Rock description | Tuffaceous Sandstone Of Henson Member Of Silverton Volcanics |
| (1) | -107.53675, 37.98694 |
|---|
| 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 |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1877 |
| Discoverer | Peter Houghton (Claimant) |
| Year of first production | 1878 |
| Year of last production | 1919 |
| District name | Galena (Henson Creek) District |
|---|
| Ownership category | Private |
|---|
| Type | Owner-Operator |
|---|---|
| Owner | Coeur D'Alene Mining Co. |
| Home office | New Haven, Ct. |
| First year | 1925 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D011605 |
LIPMAN, P.W., 1976, GEOLOGIC MAP OF THE LAKE CITY CALDERA AREA, WESTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-962.
BROWN, W.H., 1926, THE MINERAL ZONES OF THE WHITE CROSS DISTRICT AND NEIGHBORING DEPOSITS IN HINSDALE COUNTY, COLORADO: MINES MAG., V. 15, NO. 11, P. 5-15.
CROSS, WHITMAN, AND OTHERS, 1905, DESCRIPTION OF THE SILVERTON QUADRANGLE: USGS FOLIO 120, 34 P.
COLORADO DIV. MINES INF. REPT.
BLM MINERAL SURVEY MS 172
RANSOME, F.L., 1901, ECONOMIC GEOLOGY OF THE SILVERTON QUADRANGLE, COLORADO: USGS BULL. 182, P. 190-191.
| Subject category | Comment text |
|---|---|
| Deposit | MINE LIES TOWARD NW RIM OF SAN JUAN-UNCOMPAHGRE CALDERA IN LATER INFILLE SEQUENCE VOLCANIC AND SEDIMENTARY ROCKS. HILL JUST NNE OF MINE COMPOSED OF RHYOLITE PLUG (MIOCENE) RELATED TO LAKE CITY CALDERA FORMATION. GENERAL PARAGENESIS IDENTIFIED BY BROWN (1926): SPHALERITE, GALENA AND CHALCOPYRITE, PYRARGYRITE (SUPERGENE). RELATION OF CHALCOCITE IS UNCLEAR. PYRARGYRITE OCCURS AS VEINLETS IN SPHALERITE AND REPLACES GALENA IN IRREGULAR AREAS ALONG CONTACTS. RANSOME (1901) DESCRIBES VEIN AS SHEETED ZONE. CROSS AND OTHERS (1905) SHOW VEIN TRENDING N 5 W, DIPPING NE. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAR-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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