1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

London Extension

Plant in Park county in Colorado, United States with commodities Gold, Lead, Silver, Uranium
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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. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Mining district
  10. Land status
  11. Ownership information
  12. Reserves and resources
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10190939
MAS/MILS ID 0080930027
Record type Site
Current site name London Extension
Alternate or previous names London Extension Mine

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -106.152, 39.27309 (WGS84)
Elevation 336
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 Colorado

Commodities

Commodity Importance
Gold Primary
Lead Tertiary
Silver Secondary
Uranium Tertiary

Nearby scientific data

Main Entrance (1) -106.152, 39.27309
ListMap

Economic information

Comments on the geologic information

  • RADIOACTIVITY OCCURS IN TERTIARY AGE VEINS. THERE WERE EXTENSIVE MINE WORKINGS. MINE SHUT-DOWN SINCE 1943.

Economic information about the deposit and operations

Operation type Underground
Development status Plant
Commodity type Metallic
Significant Yes
Plant type Leach

Mining district

District name Alma District

Land status

Ownership category National Forest

Ownership information

  • Type Owner
    Owner Mr. Ben Wright
    Interest 100
    Year 1994
    Last year 1994

Reserves and resources

  • Type In-situ
    Estimate year 1991
    Indicated 29700mt ore
    Demonstrated 29700mt ore
    Total resources 29700mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 18.5 g/mt Gold Major 1991

Comments on the reserve resource information

  • 1991 RES.= 32,750 ST (29,700 MT) @ .54 OZ/T (18.5 G/MT) SUPPLIED BY BOULDER GROUP INC. - (8 JUNE 93)

Reference information

Bibliographic references

  • Deposit

    REF: MAS OCT 1976 FILE

  • Deposit

    COLO DIV MINES: ACTIVE METAL/NONMLOWN: LONDON FAULT MINING C

  • Deposit

    USGS CLIMAX QUAD

General comments

Subject category Comment text
Deposit AS OF 10/91, THIS PROPERTY WAS ON HOLD PENDING FINANCING.

Reporter information

Type Date Name Affiliation Comment
Reporter 24-OCT-97 Buckingham, David A. U.S. Bureau of Mines

Beyond USGS

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

External references

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.