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

Two Brothers Tunnel

Unknown in Clear Creek county in Colorado, United States with commodities Uranium, Vanadium, Gold, Silver, Copper, Lead, Zinc
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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. Mineral occurrence model information
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Mineral rights holdings
  12. Land status
  13. Production statistics
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10238514
MAS/MILS ID 0080190068
Record type Site
Current site name Two Brothers Tunnel

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -105.5342, 39.76332 (WGS84)

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

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 003 S 073 W 26 Colorado

Commodities

Commodity Importance
Uranium Tertiary
Vanadium Critical Tertiary
Gold Primary
Silver Primary
Copper 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

Ore Body (1) -105.5342, 39.76332
ListMap

Economic information

Economic information about the deposit and operations

Operation type Underground
Commodity type Metallic
Significant No

Mining district

District name Central City

Mineral rights holdings

Type of mineral rights Located Claim

Land status

Ownership category Private

Production statistics

  • Year 1959
    Period 1955-1959
    Material ore
    Ore mined 28514.24mt
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Silver Silver 3353515.11g
    Major Gold Gold 348483.4g
    Minor Zinc Zinc 2766.91mt
    Minor Lead Lead 498135.14mt
    Minor Copper Copper 119022.63mt

Reference information

Bibliographic references

  • Deposit

    PUBLISHED DATA: BASTIN AND HILL, 1917, ECON. GEOLOGY OF GILP

  • Deposit

    COLO.: U.S.G.S. PROF. PAPER 94, P. 285.

  • Deposit

    DATA FROM PRR-1615, EXAMINED IN 1952.

  • Deposit

    USGS OFR 66-87 p. 200

General comments

Subject category Comment text
Deposit RADIOACTIVITY MEASURES 3 TIMES BACKGROUND THE 7-1/2 MINUTE MAP FOR THE AREA IS CENTRAL CITY.

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-1984 Minecom U.S. Bureau of Mines
Updater 14-JUN-0007 Melton, Greg U.S. Geological Survey

Beyond USGS

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

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.