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

Last Chance

Past Producer in Clear Creek county in Colorado, United States with commodities Gold, Silver, Lead
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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. Host and associated rocks
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Land status
  12. Production statistics
  13. Links to other databases
  14. Bibliographic references
  15. Reporter information

Geologic information

Identification information

Deposit ID 10141394
MRDS ID DC03075
MAS/MILS ID 0080190018
Record type Site
Current site name Last Chance
Related records 10017206

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -105.66087, 39.7136 (WGS84)
Elevation 3215
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

Clear Creek(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Georgetown(quadrangle 1:24,000 scale)

Denver West(quadrangle 1:100,000 scale)

Denver(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Clear(hydrologic unit)

South Platte(hydrologic accounting unit)

South Platte(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Arapaho and Roosevelt 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 Clear Creek

Commodities

Commodity Importance
Gold Tertiary
Silver Primary
Lead Secondary

Materials information

Materials Type of material
Galena Ore
Sphalerite Ore

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss

Nearby scientific data

Main Entrance (1) -105.66087, 39.7136
ListMap

Economic information

Economic information about the deposit and operations

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

Mining district

District name Silver Plume - Georgetown

Land status

Ownership category National Forest

Production statistics

  • Year 1917
    Period 1915-17
    Material ore
    Ore mined 3.44mt
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Lead Lead 381.92mt
    Major Silver Silver 19844.02g
    Trace Gold Gold 4.04g

Reference information

Bibliographic references

  • Deposit

    SOURCE OF INFORMATION: E.R.D.A. OPEN FILE DATA

  • Deposit

    USGS OFR 67-109, p. 23

Reporter information

Type Date Name Affiliation Comment
Reporter 17-NOV-1983 Intermountain Field Operations Center (IFOC) U.S. Bureau of Mines
Updater 01-AUG-0007 Melton, Greg U.S. Geological Survey

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.