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  3. Mineral Resource Data System (MRDS)

Joker Lode Iron Deposit

Occurrence in Fremont county in Colorado, United States with commodity Iron
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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. Materials information
  8. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. Reporter information

Geologic information

Identification information

Deposit ID 10094574
MRDS ID D009486
Record type Site
Current site name Joker Lode Iron Deposit
Alternate or previous names Iron Mine, Iron Age Mine, Long Gulch Lode Claims

Geographic coordinates

Geographic coordinates: -105.68252, 38.51668 (WGS84)
Elevation 2682
Relative position 9.75 MILES N 04 E OF COTOPAXI

Site location context

Political divisions (FIPS codes)

Fremont(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Waugh Mountain(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
New Mexico 049N 012E 07 E2 Colorado

Comments on the location information

  • EAST OF RED HILL; ACCURACY TO ABOUT 0.5 MILE; ON NE SLOPE OF LONG GULCH, 2100 FT NE OF SE CORNER, SECTION 7 ; INFO FROM LAND.ST :(1976)

Commodities

Commodity Importance
Iron Primary

Comments on the commodity information

  • VERY SILICEOUS, BLUE-BLACK HEMATITE

Materials information

Materials Type of material
Hematite Ore
Chlorite Gangue
Epidote Gangue

Alteration

  • (Local) Oxidation

Analytical data

Result 46.2 % FE, 0.2 % MN, 0.04 % P, 0.11 % S, 24.6 % SI
Result ALSO PRESENT ARE: CU, AG, GA, ZR, TI, PB, V, CR, CO, NI

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Stratigraphic age (youngest) Paleoproterozoic

Nearby scientific data

(1) -105.68252, 38.51668
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Waugh Mountain Volcanic Center, Thirtynine Mile Volcanic Field
Type of structure Local
Structure description Cotopaxi Fault, Texas Creek Fault; Shear Zones

Ore body information

  • Strike N45E
    Dip 67 E
    Length 30.48M
    Width 7.62M

Controls for ore emplacement

  • North-Trending Shear Zone

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1954

Mining district

District name Long Gulch Area

Land status

Ownership category Private

Workings at the site

  • Type of workings Surface
    Overall depth 3.05M

Comments on the workings information

  • PROSPECT PIT DUG PARALLEL TO STRIKE

Comments on development

  • TRIAL SHIPMENT TO COLORADO FUEL AND IRON CORP. AT PUEBLO PROVED TOO SILICEOUS FOR USE AS IRON ORE

Reference information

Bibliographic references

  • Deposit

    EPIS, R.C., WOBUS, R.A. AND SCOTT, G.R., 1979, GEOLOGIC MAP OF THE BLACK MOUNTAIN QUADRANGLE, FREMONT AND PARK COUNTIES, COLORADO: USGS MAP I-1195, 1:62,500.

  • Deposit

    BUTLER, J.R., 1954, GEOLOGY OF AN AREA NORTH OF COTOPAXI, FREMONT COUNTY, COLORADO: M.S. THESIS, UNIVERSITY OF COLORADO; P. 47-48

  • Deposit

    HARRER, C.M. AND TESCH, W.J., JR., 1959, RECONNAISSANCE OF IRON OCCURRENCES IN COLORADO: USBM INFORMATION CIRCULAR 7918, P. 31-32.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-1982 Collins, Donna B. 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.