Bay City Mine

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

Name: Bay City Mine  

State:  Colorado

County:  La Plata

Elevation: 8,881 Feet (2,707 Meters)

Commodity: Gold, Silver, Copper

Lat, Long: 37.36444, -108.07861

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.


Satelite image of the Bay City Mine

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

Placer mines at Cripple Creek, Colorado ca. 1892

Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.