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

Forge Hill Tunnel

Past Producer in Clear Creek county in Colorado, United States with commodities Copper, Gold, Lead, Silver, 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. Materials 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 10117234
MAS/MILS ID 0080190632
Record type Site
Current site name Forge Hill Tunnel

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -105.53449, 39.76829 (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
Copper Tertiary
Gold Primary
Lead Tertiary
Silver Tertiary
Zinc Critical Tertiary

Materials information

Materials Type of material
Pyrite Ore
Galena Ore
Sphalerite Ore

Nearby scientific data

Main Entrance (1) -105.53449, 39.76829
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 1958
    Period 1918-1958
    Material ore
    Ore mined 867.08mt
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Zinc Zinc 6378.41mt
    Trace Silver Silver 44291.35g
    Trace Lead Lead 13576.92mt
    Major Gold Gold 870.89g
    Trace Copper Copper 604.18mt

Reference information

Bibliographic references

  • Deposit

    REF:BOM ANNUAL REPORT 1970 OPERATOR:CLIFF MORRISON & KEN HOD

Reporter information

Type Date Name Affiliation Comment
Reporter 17-NOV-1983 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.