The Golconda Mine is a silver and gold mine located in Hinsdale county, Colorado at an elevation of 12,379 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: 12,379 Feet (3,773 Meters)
Commodity: Silver, Gold
Lat, Long: 37.95583, -107.54750
Map: View on Google Maps
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Golconda Mine MRDS details
Site Name
Primary: Golconda Mine
Secondary: Patented Claims: New Brighton Mill Site, MS 673b
Secondary: Thunderbolt Mill Site, MS 685b
Secondary: Fort Donaldson, MS 1230
Secondary: Bob Ingersoll, MS 16129
Secondary: Dewey No. 2, MS 16374
Secondary: Goodwin, MS 16754
Secondary: Unpatented Claims: Golconda
Secondary: Gold Pick
Secondary: Colchis
Secondary: Edward E. Yater
Secondary: Grassey
Secondary: Croesus
Secondary: Gold Crescent
Secondary: Midas
Secondary: Golden Scepter
Secondary: Jensen
Secondary: Ensign
Secondary: Payteller
Commodity
Primary: Silver
Primary: Gold
Secondary: Copper
Secondary: Lead
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: Golconda Mines
Home Office: Silverton, Co.
Years: 1977 -
Production
Year: 1919
Description: Ap_Grade: ^7.34 Oz/Ton Ag, 0.946 Oz/Ton Au
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Unknown
Year Last Production: 1919
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, Eureka Graben
Alterations
Alteration Type: L
Alteration Text: Apparent Supergene Oxidation Of Sulfides To Pyrargyrite And Argentite
Rocks
Name: Rhyolite
Role: Associated
Age Type: Associated Rock
Age Young: Oligocene
Name: Rhyolite
Role: Associated
Age Type: Host Rock
Age Young: Oligocene
Analytical Data
Not available
Materials
Ore: Galena
Ore: Pyrite
Ore: Sphalerite
Ore: Chalcopyrite
Ore: Argentite
Gangue: Limonite
Gangue: Quartz
Comments
Comment (Location): CLAIMS LIE ACROSS UPPER HURRICAN BASIN EAST OF SEIGAL MTN AND DENVER PASS. ELEV AND LAT-LONG GIVEN ARE FOR PROBABLE MAIN CROSSCUT TUNNEL IN SE SEC. 29. ; INFO FROM LAND.ST :1977
Comment (Production): PARTIAL PRODUCTION RECORD. FIGURES UNAVAILABLE FOR PRIOR YEARS. NO PRODUCTION REPORTED IN 1916-1918, 1921-1926, 1962-1964, 1966-1969.
Comment (Deposit): MINE DEVELOPED ON FAULT LYING TOWARD NW SIDE OF EUREKA GRABEN AND TRENDING GENERALLY N 45 E, DISPLACING (DOWNDROPPING) BURNS MBR QUARTZ LATITE ON SE AGAINST EUREKA MBR RHYOLITE ON NW. GENERAL PARAGENESIS IDENTIFIED BY BROWN (1926): (1) SPHALERITE; (2) GALENA AND CHALCOPYRITE; (3) LATE PYRITE. IN UPPER LEACHED OR OXIDIZED ORE, QUARTZ FORMED BY DEPOSITION FROM SOLUTION AND BY REPLACEMENT OF WALLROCK AND CONTAINS SPHALERITE THAT HAS PYRARGYRITE COATINGS.
Comment (Workings): DEWEY TUNNEL DRIVEN 300 FT, DIRECTION AND EXTENT UNKNOWN; HURRICANE TUNNEL DRIVEN 800 FT, DIRECTION AND EXTENT UNKNOWN. GOLCONDA TUNNEL DRIVEN 1690 FT, PRESUMABLY SE; VEIN INTERSECTED AT 900 FT FROM PORTAL, WITH 3380 FT OF DRIFT AND 140-FT RAISE AT 885 FT. MAIN DRIFT WAS CONTINUED ABOUT 115 FT IN 1967-1969; NEW 150-FT CROSSCUT BEING DRIVEN IN 1977 TO INTERSECT OLD CROSSCUT.
References
Reference (Deposit): BLM MINERAL SURVEYS MS 673B, 685B, 1230, 16129, 16374, 16754
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 (Production): COLORADO DIV. MINES ANNUAL OPERATOR REPT.
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): CROSS, WHITMAN, AND OTHERS, 1905, DESCRIPTION OF THE SILVERTON QUADRANGLE: USGS FOLIO 120, 34 P.
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): COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPTS.
Colorado Mining Photos
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