Wilfley-Kimberly Mine

The Wilfley-Kimberly Mine is a gold, lead, zinc, and silver mine located in Summit county, Colorado at an elevation of 10,600 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

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Site Name

Primary: Wilfley-Kimberly Mine
Secondary: Wilfley Adit (Tunnel)
Secondary: Delphose Tunnel
Secondary: Kimberly Tunnel

Commodity

Primary: Gold
Primary: Lead
Primary: Zinc
Primary: Silver
Secondary: Copper

Location

State: Colorado
County: Summit
District: Tenmile - Kokomo

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

Not available

Production

Year: 1965
Time Period: 1902-65

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Underground
Mining Method: Unknown
Years of Production:
Organization:
Significant: N

Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains

Mineral Deposit Model

Model Name: Polymetallic replacement

Orebody

Not available

Structure

Type: L
Description: SW flank of Kokomo syncline, many small high-angle faults

Alterations

Alteration Type: L
Alteration Text: silicification (jasperoid)

Rocks

Name: Porphyry
Role: Associated
Age Type: Associated Rock
Age Young: Tertiary

Name: Limestone
Role: Host
Age Type: Host Rock
Age Young: Pennsylvanian

Analytical Data

Not available

Materials

Ore: Sphalerite
Ore: Pyrrhotite
Ore: Pyrite
Ore: Galena
Gangue: Siderite

Comments

Comment (Production): The Wilfley-Kimberly was one of the major producers in the district. Rich oxidized silver-lead ore was mined in the early days, but records of production before 1902 are unavailable. Total production from 1902 to 1965: gold - 4,485 oz, silver - 203,358 oz, copper - 7,759 lb, lead - 2,313,880 lb, zinc - 9,183,746 lb.

Comment (Production): Production grouped with Kimberly mine

Comment (Development): In 1895 the Wilfley concentrating table was developed and used here to successfully separate mixed sulfide ores of lead and zinc.

Comment (Geology): Replacement ore bodies are in the White Quail Limestone that dips NE into the Kokomo syncline at 20 to 35 degrees. Many north- to NE-trending, high-angle faults of small displacement probably served as channels for ore fluids and are mineralized also.

Comment (Location): Adits on west side of Searle Gulch, about 1 mile NW of Kokomo (townsite), in the NE/4 sec 22, T 7 S, R 79 W.

Comment (Commodity): Gangue contains jasperoid.

Comment (Reserve-Resource): 500,000 tons in 5 blocks, half of which is judged to be recoverable (1949 Sunshine file report)

References

Reference (Deposit): Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.

Reference (Deposit): Bergendahl, M. H., and Koschmann, A. H., 1971, Ore deposits of the Kokomo-Tenmile district, Colorado: U.S. Geological Survey Professional Paper 652, 53 p.

Reference (Deposit): Koschmann, A. H., and Wells, F. G., 1946, Preliminary report on the Kokomo mining district, Colorado: Colorado Scientific Society Proceedings, v. 15, no. 2, p. 51-112.

Colorado Mining Photos

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