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

Little Annie Tunnel

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

Geologic information

Identification information

Deposit ID 10264044
MAS/MILS ID 0080190940
Record type Site
Current site name Little Annie Tunnel

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -105.54419, 39.76469 (WGS84)
Elevation 2865
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Clear Creek(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Central City(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)

Geographic areas

Country State County
United States Colorado Clear Creek

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Lead Secondary
Zinc Critical Secondary

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) -105.54419, 39.76469
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 Central City

Land status

Ownership category Private

Production statistics

  • Year 1935
    Period 1934-1935
    Material ore
    Ore mined 7.45mt
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Zinc Zinc 4%null%
    Minor Lead Lead 3%null%
    Minor Silver Silver 186g/mt
    Major Gold Gold 11g/mt

Reference information

Bibliographic references

Reporter information

Type Date Name Affiliation Comment
Reporter 13-FEB-1978 Intermountain Field Operations Center (IFOC) 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.