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

Knob Hill Mine

Past Producer in Fremont county in Colorado, United States with commodities Uranium, Vanadium
Map
XML
JSON
KML
B
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. Alteration
  9. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Geologic structures
  13. Ore body information
  14. Controls for ore emplacement
  15. Economic information about the deposit and operations
  16. Mining district
  17. Land status
  18. Ownership information
  19. Production statistics
  20. Links to other databases
  21. Bibliographic references
  22. Reporter information

Geologic information

Identification information

Deposit ID 10013179
MRDS ID D009325
Record type Site
Current site name Knob Hill Mine
Alternate or previous names Dipper Mine, Knob Hill Os, Knob Hill Ore Body, Nob Hill Mine
Related records 10239661

Geographic coordinates

Geographic coordinates: -105.54419, 38.5339 (WGS84)
Elevation 2499
Relative position 10 MILES N 65 W OF PARKDALE

Site location context

Political divisions (FIPS codes)

Fremont(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Hall Gulch(quadrangle 1:24,000 scale)

Pikes Peak(quadrangle 1:100,000 scale)

Pueblo(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Arkansas Headwaters(hydrologic unit)

Upper Arkansas(hydrologic accounting unit)

Upper Arkansas(hydrologic subregion)

Arkansas-White-Red(hydrologic region)

Geographic areas

Country State County
United States Colorado Fremont

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 017S 073W 22 SW OF NE OF SW Colorado

Comments on the location information

  • NORTH SIDE OF MIDDLE TALLAHASSEE CREEK ; INFO FROM LAND.ST :1976

Commodities

Commodity Importance
Uranium Primary
Vanadium Critical Secondary

Materials information

Materials Type of material
Coffinite Ore
Uraninite Ore
Hematite Gangue
Limonite Gangue

Alteration

  • (Local) Oxidation; Alteration Of Feldspar To Clay

Mineral occurrence model information

Model code 204
USGS model code 30c
Deposit model name Sandstone U

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Rock unit name Wall Mountain Tuff Was Probable Principal Uranium Source
    Rock description Wall Mountain Tuff Was Probable Principal Uranium Source
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Volcanic Breccia (Agglomerate)
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Tallahassee Creek Conglomerate
    Rock description Tallahassee Creek Conglomerate

Nearby scientific data

(1) -105.54419, 38.5339
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Thirty Nine Mile Volcanic Field, Currant Creek Basin
Type of structure Local
Structure description Echo Park Graben, Paleovalleys

Ore body information

  • General form TABULAR, PODS, LENTICULAR MASSES
    Width 2M
    Depth to top 13.72M

Controls for ore emplacement

  • Deposition Controlled By Ground Water Flow Conditions And Carbonaceous Material With Associated Pyrite. Flow Was Impeded By The Fault On The Southern End Of The Echo Park Graben.

Comments on the geologic information

  • DEPOSITS LOCALIZED AND PRESERVED BY SLUGGISH GROUNDWATER MOVEMENT IN AREA. THOSE CONDITIONS STILL PRESENT AS EVIDENCED BY ARTESIAN PRESSURE IN WELLS AND SPRINGS ISSUING FROM ECHO PARK FORMATION AND BY A PRESENT URANIUM CONTENT OF GROUNDWATER IN AREA AS HIGH AS 900 PPB.

Economic information about the deposit and operations

Operation type Surface
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Tallahassee Creek

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Dickson, Ben
    Year 1975

Production statistics

  • Year 1967
    Period 1955?-1967
    Accuracy Accurate
    Description Cp_Grade: ^0.20% U308, 0.01% V205
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor V2O5 Ore Vanadium Vanadium 0wt-pct
    Major U3O8 Ore Uranium Uranium 0wt-pct
  • Year 1971
    Period 1967-1971
    Accuracy Accurate
    Description Cp_Grade: ^0.15% U308
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major U3O8 Ore Uranium Uranium 0wt-pct

Comments on the workings information

  • OPEN PITS WITH UNDERGROUND WORKINGS OFF WALLS OF PITS

Reference information

Bibliographic references

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1982 Collins, Donna B. Colorado Geological Survey
Updater 14-JUN-2004 Keller, John W. Colorado 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.