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  3. Mineral Resource Data System (MRDS)

London Mine group

Past Producer in Park county in Colorado, United States with commodities 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. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Mineral occurrence model information
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Mineral rights holdings
  13. Land status
  14. Ownership information
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10240347
MAS/MILS ID 0080930167
Record type Site
Current site name London Mine group
Alternate or previous names North London Mill 0080930194, London-Butte Mine, London Fault Adit, London Extension 0080930027, North London Mine 0080930195, South London Mine 0080930239

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -106.1437, 39.27309 (WGS84)
Elevation 3505
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Park(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Climax(quadrangle 1:24,000 scale)

Leadville(quadrangle 1:100,000 scale)

Leadville(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

South Platte Headwaters(hydrologic unit)

South Platte(hydrologic accounting unit)

South Platte(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Pike and San Isabel National Forests(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Colorado Park

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 009 S 078 W 18 NE Colorado

Comments on the location information

  • The London Mine is on London Mountain, about 5 miles west of Alma, in secs. 7 and 18, T 9 S, R 78 W, and secs. 1 and 12, T 9 S, R 79 W.

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Lead Secondary
Copper Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Gold Ore
Pyrite Ore
Sphalerite Ore
Calcite Gangue
Quartz Gangue
Sericite Gangue

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Nearby scientific data

Main Entrance (1) -106.1437, 39.27309
ListMap

Economic information

Comments on the geologic information

  • Gold-quartz veins in faults in porphyry sills in the lower Weber(?) formation in the footwall adjacent to the London reverse fault.

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1873
Mining method Open Stope - Room and Pillar
Year of first production 1874
Milling method Flotation

Mining district

District name Alma District

Mineral rights holdings

Type of mineral rights Patented

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Cobb Resources Corp.
    Interest 50
    Home office New Mexico
    Year 1987
  • Type Owner-Operator
    Owner Boulder Gold, Inc.
    Interest 50
    Home office Colorado
    Year 1987
  • Type Owner
    Owner Alma American Mining Corp.
    ID 500571
    Interest 100
    Home office New Mexico
    Year 1980
  • Type Operator
    Owner Alma London Joint Venture
    Home office New Mexico
    Year 1980

Comments on the production information

  • About 2/3 to 3/4 of Alma district production has come from the London mine area. The mine operated continuously from 1875 to 1942; after World War II, operations were intermittent through 1989. Production totals from 1901 to 1931 are: gold, 263,173 oz., silver, 237,178 oz., lead, 5.88 million lb., and copper, 165,000 lb.; in addition, substantial production occurred before 1901 and after 1931. Total gold production is probably around 1 million oz.

Comments on the reserve resource information

  • A 1988 estimate stated that 1 million tons of material graded 0.27 oz/ton of gold. (USGS OFR 98-206)

Comments on development

  • THE LONDON MINE HAD BEEN WORKED BETWEEN 1875 AND THE 1940'S. REOPENED IN 1988 AFTER A DECADE OF REHABILITATION, EXPLORATION, AND DEVELOPMENT OF ORE RESERVES. IT CLOSED DOWN AGAIN IN JUNE 1989 BECAUSE OF LACK OF ECONOMICALLY RECOVERABLE ORE AND THE CONTINUED LOW PRICE OF ORE.

Reference information

Bibliographic references

Reporter information

Type Date Name Affiliation Comment
Reporter 24-OCT-97 Buckingham, David A. U.S. Bureau of Mines
Updater 03-MAY-06 Beach, Richard A. Colorado Geological Survey

Beyond USGS

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

Current status (per MSHA)

StatusAbandoned since 12/09/1991
MSHA mine ID0500571
Mine name (MSHA)London Mine
Current operatorAlma London Limited Liability Company
Current controller (parent)Cobb Resources Corp & Boulder Gold Inc
Mine typeUnderground (Metal / non-metal)

MSHA cross-reference per the original MRDS record. Mine status and operator reflect MSHA's last published Mines export (February 2025); MSHA's public bulk feed has been unavailable since, so this may be out of date. See the Mine Data Retrieval System for current status.

Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.

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.