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Wilfley-Kimberly Mine

Past Producer in Summit county in Colorado, United States with commodities Zinc, Gold, Silver, Lead, Copper
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Alteration
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Production statistics
  16. Links to other databases
  17. Bibliographic references
  18. Reporter information

Geologic information

Identification information

Deposit ID 10191953
MAS/MILS ID 0081170258
Record type Site
Current site name Wilfley-Kimberly Mine
Alternate or previous names Wilfley Adit (Tunnel), Delphose Tunnel, Kimberly Tunnel

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -106.19811, 39.43388 (WGS84)
Elevation 3231
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

Summit(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Copper Mountain(quadrangle 1:24,000 scale)

Leadville(quadrangle 1:100,000 scale)

Leadville(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Blue(hydrologic unit)

Colorado Headwaters(hydrologic accounting unit)

Colorado Headwaters(hydrologic subregion)

Upper Colorado(hydrologic region)

Federal lands

White River National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Colorado Summit

Comments on the location information

  • 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.

Commodities

Commodity Importance
Zinc Critical Primary
Gold Primary
Silver Primary
Lead Primary
Copper Secondary

Comments on the commodity information

  • Gangue contains jasperoid.

Materials information

Materials Type of material
Galena Ore
Pyrite Ore
Pyrrhotite Ore
Sphalerite Ore
Siderite Gangue

Alteration

  • (Local) silicification (jasperoid)

Mineral occurrence model information

Model code 72
USGS model code 19a
Deposit model name Polymetallic replacement
Mark3 model number 47

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name White Quail Limestone Mbr., Minturn Formation
    Stratigraphic age (youngest) Pennsylvanian
  • Host or associated Associated
    Rock type Plutonic Rock > Porphyry
    Rock unit name quartz monzonite porphyry
    Stratigraphic age (youngest) Tertiary

Economic information

Geologic structures

Type of structure Local
Structure description SW flank of Kokomo syncline, many small high-angle faults

Comments on the geologic information

  • 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.

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant No

Mining district

District name Kokomo District
District name Tenmile - Kokomo

Land status

Ownership category Private

Production statistics

  • Year 1965
    Period 1902-65
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 139499.11g
    Trace Copper Copper 3519.42mt
    Trace Silver Silver 6325141.68g
    Trace Lead Lead 1049558.31mt
    Trace Zinc Zinc 4165677.11mt

Comments on the production information

  • 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.
  • Production grouped with Kimberly mine

Comments on the reserve resource information

  • 500,000 tons in 5 blocks, half of which is judged to be recoverable (1949 Sunshine file report)

Comments on development

  • In 1895 the Wilfley concentrating table was developed and used here to successfully separate mixed sulfide ores of lead and zinc.

Reference information

Bibliographic references

  • 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.

  • 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.

  • Deposit

    Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.

Reporter information

Type Date Name Affiliation Comment
Reporter 13-FEB-78 Intermountain Field Operations Center (IFOC) U.S. Bureau of Mines
Updater 25-JAN-06 Beach, Richard A. Colorado Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Colorado resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.