The Dolly Varden Mine is a silver mine located in Hinsdale county, Colorado at an elevation of 12,201 feet.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Elevation: 12,201 Feet (3,719 Meters)
Commodity: Silver
Lat, Long: 37.98694, -107.53611
Map: View on Google Maps
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Dolly Varden Mine MRDS details
Site Name
Primary: Dolly Varden Mine
Secondary: Varden Belle Mine
Secondary: Patented Claim: Dolly Varden, MS 172
Commodity
Primary: Silver
Secondary: Lead
Secondary: Copper
Tertiary: Zinc
Tertiary: Antimony
Location
State: Colorado
County: Hinsdale
District: Galena (Henson Creek) District
Land Status
Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Coeur D'Alene Mining Co.
Home Office: New Haven, Ct.
Years: 1925 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Unknown
Year First Production: 1878
Year Last Production: 1919
Discovery Year: 1877
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Type: R
Description: San Juan Volcanic Field, San Juan Depression
Type: L
Description: San Juan-Uncompahgre Calderas, Lake City Caldera
Alterations
Not available
Rocks
Name: Rhyolite
Role: Associated
Age Type: Associated Rock
Age Young: Miocene
Name: Rhyolite
Role: Associated
Age Type: Host Rock
Age Young: Oligocene
Name: Rhyolite
Role: Associated
Age Type: Host Rock Unit
Age Young: Oligocene
Analytical Data
Not available
Materials
Ore: Chalcocite
Ore: Chalcopyrite
Ore: Stephanite
Ore: Galena
Ore: Pyrargyrite
Ore: Sphalerite
Gangue: Quartz
Comments
Comment (Workings): CROSSCUT TUNNEL DRIVEN GENERALLY NW FOR 804 FT TO VEIN; 116-FT DRIFT DRIVEN AT 550 FT FROM PORTAL; 83-FT DRIFT DRIVEN NE ON VEIN AT 712 FT FROM PORTAL, WITH 121-FT RAISE. RANSOME (1901) MENTIONS OLD SHAFT (DEPTH UNKNOWN).
Comment (Location): MINE LIES ON SE SLOPE OF DOLLY VARDEN MOUNTAIN 0.75 MILE NNE OF ROSE CABIN. ; INFO FROM LAND.ST :1977
Comment (Development): DEVELOPMENT WORK REPORTED IN 1907. PROBABLE SMALL PRODUCTION REPORTED IN 1913, 1917, AND 1919.
Comment (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.
References
Reference (Deposit): 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.
Reference (Deposit): CROSS, WHITMAN, AND OTHERS, 1905, DESCRIPTION OF THE SILVERTON QUADRANGLE: USGS FOLIO 120, 34 P.
Reference (Deposit): LIPMAN, P.W., 1976, GEOLOGIC MAP OF THE LAKE CITY CALDERA AREA, WESTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-962.
Reference (Deposit): LUEDKE, R.G., AND BURBANK, W.S., 1975, PRELIMINARY GEOLOGIC MAP OF THE HANDIES PEAK QUADRANGLE, COLORADO: USGS OPEN-FILE REPT. 75-432.
Reference (Deposit): RANSOME, F.L., 1901, ECONOMIC GEOLOGY OF THE SILVERTON QUADRANGLE, COLORADO: USGS BULL. 182, P. 190-191.
Reference (Deposit): COLORADO DIV. MINES INF. REPT.
Reference (Deposit): BLM MINERAL SURVEY MS 172
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