The Exchequer Tunnel is a lead, gold, and silver mine located in Mineral county, Colorado at an elevation of 9,678 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: 9,678 Feet (2,950 Meters)
Commodity: Lead, Gold, Silver
Lat, Long: 37.86722, -106.92917
Map: View on Google Maps
Satelite View
MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Exchequer Tunnel MRDS details
Site Name
Primary: Exchequer Tunnel
Commodity
Primary: Lead
Primary: Gold
Primary: Silver
Tertiary: Copper
Tertiary: Manganese
Location
State: Colorado
County: Mineral
District: Creede 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
Type: Underground
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
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; La Garita, Creede, And Bachelor Calderas
Type: L
Description: Creede Graben, Amethyst Fault Zone
Alterations
Alteration Type: L
Alteration Text: Copper Staining
Rocks
Name: Rhyolite
Role: Associated
Age Type: Host Rock Unit
Age Young: Oligocene
Name: Rhyolite
Role: Associated
Age Type: Host Rock
Age Young: Oligocene
Name: Rhyolite
Role: Associated
Age Type: Associated Rock
Age Young: Oligocene
Analytical Data
Analytical Data: 2 TO 45 OZ/TON AG, $1.40/TON AU
Materials
Ore: Silver
Gangue: Amethyst
Gangue: Limonite
Gangue: Quartz
Gangue: Barite
Comments
Comment (Workings): TUNNEL TRENDS WEST AND NW APPROX. 1200 FT. DRIFT AND CROSSCUTS ALONG RHYOLITE CONTACT AND VEIN TOTAL APPROX. 850 FT.
Comment (Location): S-T-R, LAT-LONG, AND ELEV DETERMINED FROM EMMONS AND LARSEN'S (1923) TOPO MAP (1:24,000). MINE OR CLAIM LIES ABOVE W. WILLOW CR. ON SE END OF BACHELOR MTN. ; INFO FROM LAND.ST :(1976)
Comment (Development): NO WORKABLE ORE BODY ENCOUNTERED AS OF 1912
Comment (Deposit): FRACTURE ZONE ALONG CONTACT BETWEEN WILLOW CR. AND CAMPBELL MTN. RHYOLITE
References
Reference (Deposit): EMMONS, W.H., AND LARSEN, E.S. 1923, GEOLOGY AND ORE DEPOSITS OF THE CREEDE DISTRICT, COLORADO: USGS BULL. 718, 198 P.
Reference (Deposit): STEVEN, T.A., AND RATTE, J.C., 1965, GEOLOGY AND STRUCTURAL CONTROL OF ORE DEPOSITION IN THE CREEDE DISTRICT, SAN JUAN MOUNTAINS, COLORADO: USGS PROF. PAPER 487, 90 P.
Reference (Deposit): LINDEMANN, J.W., AND OTHERS, EDS., 1981, FIELD TRIP NOTES, CREEDE MINING DISTRICT, SAN JUAN VOLCANIC PROVINCE, COLORADO: DENVER REGIONAL EXPLORATION GEOLOGISTS SOC. GUIDEBOOK
Colorado Mining Photos
Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.
