Pewabic-Iron

Past Producer in Gilpin county in Colorado, United States with commodities Gold, Uranium, Vanadium
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. Materials information
  8. Mineral occurrence model information
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10287994
MRDS ID D002220
MAS/MILS ID 0080470003
Record type Site
Current site name Pewabic-Iron
Alternate or previous names Pewabic
Related records 10009309

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -105.53142, 39.77666 (WGS84)

Site location context

Political divisions (FIPS codes)

Gilpin(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 Gilpin

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 003 S 073 W 23 Colorado

Commodities

Commodity Importance
Gold Tertiary
Uranium Tertiary
Vanadium Critical Tertiary

Materials information

Materials Type of material
Chalcopyrite Unknown
Galena Unknown
Gold Unknown
Pyrite Unknown
Quartz Unknown
Silver Unknown
Sphalerite Unknown
Tennantite Unknown
Uraninite Unknown
Zincite Unknown

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) -105.53142, 39.77666

Economic information

Ore body information

  • Field Value
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 PIPELIKE
    Type of Orebody #2 SHEAR ZONE
    Shape of Orebody #2 IRREGULAR
    Shape of Orebody #3 TABULAR
    Primary mode of Origin CONT METASOMATIC
    Secondary mode of Origin HYDROTHERMAL
    Primary Ore Control IGNEOUS
    Secondary Ore Control FRACTURING
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 BLEACHING
    Type of Wallrock Alter. #2 PYRITIZATION
    Date of Last Modification 780921

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1871
Year of first production 1872

Mining district

District name Central City

Land status

Ownership category Private

Workings at the site

  • Type of workings Underground
    Length 2200M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method OTHER OPEN STOPE METHODS
    Swell Factor .7
    Hardness of Rock HARDROCK FISSURED WITH MODERATE WATER
    Rock Characteristics ONE SYSTEM OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING MAY BACK SLAB
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    Length of Inclines (m) 250
    Slope of Inclines 70
    1st Condition of Workings UNKNOWN
    Capacity Units MT ORE/DAY
    Units of Production $/MT ORE
    Year of Information 1974

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit INFORMATION OBTAINED FROM DMEA REPORT, DOCKET NO. 2752. DATE REPORT IS 1953. AT THE TIME OF THE REPORT, THE CLAIMS WHICH THEN CONTROLLED BY THE ATOMIC ENERGY URANIUM CO., INC., COLO PRODUCED A SMALL AMOUNT OF URANIUM ORE IN THE PERIOD 1872-19 MINE WAS AN EARLY GOLD PRODUCER WITH DEVELOPED MINE FACILITI THE TIME OF THE REPORT, THOSE FACILITIES WERE IN POOR REPAIR FLOODING AND CAVING. PITCHBLENDE DEPOSITS AT THE 300-FT. LEV THE DEPOSITS UNDER CONSIDERATION THOUGH SMALL AND ERRATIC IN ANCE. THE DMEA REPORT CONCLUDED THAT FURTHER EXPLORATION OF FT. LEVEL WOULD BE JUSTIFIED SHOULD THE APPLICANT ACCEPT A R PROGRAM. IT WAS NOT STATED IF THE APPLICANT ACCEPTED THE PRO INCLUDED IN THE DMEA REPORT ARE CLAIM, LOCATION AND MINE MAP CLAIMS ARE LOCATED ON THE 7-1/2 MINUTE MAP, CENTRAL CITY.

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-1984 Minecom U.S. Bureau of Mines
Updater 26-JUN-0007 Melton, Greg U.S. Geological Survey

Beyond USGS

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

Authoritative Colorado resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.