The Bay City Mine is a gold, silver, and copper mine located in La Plata county, Colorado at an elevation of 8,881 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: 8,881 Feet (2,707 Meters)
Commodity: Gold, Silver, Copper
Lat, Long: 37.36444, -108.07861
Map: View on Google Maps
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Bay City Mine MRDS details
Site Name
Primary: Bay City Mine
Commodity
Primary: Gold
Primary: Silver
Primary: Copper
Secondary: Lead
Location
State: Colorado
County: La Plata
District: California (La Plata) District
Land Status
Land ownership: National Forest
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.
Administrative Organization: San Juan N. F.
Holdings
Not available
Workings
Type: Underground
Ownership
Owner Name: L. E. M. Myers
Home Office: Hesperus, Co.
Years: 1949 -
Owner Name: Consolidated Gold Mining Co.
Home Office: Hesperus, Co.
Years: 1949 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Replacement
Operation Type: Unknown
Year First Production: 1876
Year Last Production: 1918
Discovery Year: 1987
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Intermontane Plateaus
Physiographic Province: Colorado Plateaus
Physiographic Section: Navajo Section
Mineral Deposit Model
Model Name: Polymetallic replacement
Orebody
Not available
Structure
Type: R
Description: San Juan Uplift, Four Corners Platform
Type: L
Description: La Plata Dome
Alterations
Not available
Rocks
Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Paleocene
Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Late Triassic
Name: Diorite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Paleocene
Name: Diorite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Triassic
Analytical Data
Not available
Materials
Ore: Chalcopyrite
Comments
Comment (Workings): OLD TUNNEL DRIVEN N 72 W FOR 80 FT, THENCE 210 FT AT N 22 W TO DIKE; 10-FT RAISE AT 130 FT FROM PORTAL. SECOND ADIT DRIVEN S 85 W FOR 80 FT, THENCE 135 FT AT S 75 W; 10-FT WINZE AT CHANGE IN HEADING. THIRD TUNNEL IS 300-FT CROSSCUT, HEADING UNKNOWN.
Comment (Deposit): REPLACEMENT OCCURS IN BASAL LIMY BED OF DOLORES FM, LOCALLY CALLED BAY CITY LIMESTONE AND CONSISTING OF WHITE MASSIVE LIMESTONE PARTLY METAMORPHOSED TO COARSE-GRAINED MARBLE AND GRADING LATERALLY INTO LIMESTONE CONGLOMERATE AND LIMY MUDSTONE. NE-TRENDING FAULTS DIP 80 TO 90 SE.
Comment (Location): (LAND STATUS AND ADMINISTRATIVE AREA LOCATIONS CALCULATED USING GIS OVERLAY ANALYSIS FOR SAN JUAN N. F.). MINE LIES ON WEST SIDE OF LA PLATA RIVER JUST BELOW SNOWSLIDE GULCH, 2.55 MILES SW OF LA PLATA TOWNSITE (UNSURVEYED SECTION). ; INFO FROM LAND.ST :1974
Comment (Production): PARTIAL PRODUCTION RECORD. FIGURES UNAVAILABLE FOR YEARS PRIOR TO 1902.
References
Reference (Deposit): ECKEL, E.B., AND OTHERS, 1949, GEOLOGY AND ORE DEPOSITS OF THE LA PLATA DISTRICT, COLORADO: USGS PROF. PAPER 219, P. 68-69, 89-90
Reference (Deposit): COLORADO DIV. MINES INF. REPT.
Reference (Deposit): BLM MINERAL SURVEY MS 1140
Reference (Production): ECKEL AND OTHERS, 1949, P. 89
Colorado Mining Photos
Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.
