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Grapevine Mine

Producer in Jefferson county in Colorado, United States with commodity Uranium
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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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Production statistics
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10107985
MRDS ID D009848
Record type Site
Current site name Grapevine Mine
Related records 10305371

Geographic coordinates

Geographic coordinates: -105.2403, 39.67416 (WGS84)
Elevation 2048
Relative position 3.0 MILES N 62 DEG W FROM MORRISON

Site location context

Political divisions (FIPS codes)

Jefferson(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Morrison(quadrangle 1:24,000 scale)

Denver West(quadrangle 1:100,000 scale)

Denver(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper South Platte(hydrologic unit)

South Platte(hydrologic accounting unit)

South Platte(hydrologic subregion)

Missouri(hydrologic region)

Geographic areas

Country State County
United States Colorado Jefferson

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 004S 070W 29 NE OF NE OF SE Colorado

Comments on the location information

  • ALONG SAWMILL GULCH ; INFO FROM LAND.ST :(1976)

Commodities

Commodity Importance
Uranium Primary

Materials information

Materials Type of material
Uraninite Ore
Feldspar Gangue
Hematite Gangue
Limonite Gangue
Pyrite Gangue
Quartz Gangue

Analytical data

Result ORE GRADES RANGED FROM 0.15 TO 0.47% U308, WITH OVERALL AVERAGE 0.32 TO 0.37 % U308

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Rock unit name Idaho Springs Formation
    Rock description Idaho Springs Formation
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic

Economic information

Geologic structures

Type of structure Regional
Structure description Denver Basin, Front Range Uplift
Type of structure Local
Structure description Bear Creek Shear Zone, Junction Ranch Fault, Cherry Gulch Fault

Ore body information

  • General form LENTICULAR

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1955
Discoverer J.R. Wilson And Wayne Freedman
Year of first production 1955
Year of last production 1968

Mining district

District name Idledale District

Land status

Ownership category Private

Production statistics

  • Year 1955
    Material ORE U
    Accuracy Accurate
    Description Ap_Grade: ^0.33% U308
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    U3O8 Ore Uranium Uranium 0wt-pct
  • Year 1956
    Material U308
    Accuracy Accurate
    Description Ap_Grade: ^0.47% U308
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    U3O8 Uranium Uranium 0wt-pct
  • Year 1959
    Material ORE U
    Accuracy Accurate
    Description Ap_Grade: ^0.15% U308
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    U3O8 Ore Uranium Uranium 0wt-pct
  • Year 1960
    Period 1955-1960
    Material ORE U
    Accuracy Accurate
    Description Cp_Grade: ^0.37% U308
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    U3O8 Ore Uranium Uranium 0wt-pct

Comments on the production information

  • PARTIAL PRODUCTION RECORD. NO PRODUCTION IN 1957. ANNUAL FIGURES FOR 1961-68 NOT AVAILABLE. FIGURES FOR 1955 AND 1960 INCLUDE SMALL AMOUNT OF PRODUCTION FROM QUATMAN LEASE. CUMULATIVE FOR 1955-68 FROM NELSON-MOORE AND OTHERS.

Workings at the site

  • Type of workings Underground
    Length 172.82M
    Overall depth 28.04M

Comments on the workings information

  • OLDER WORKINGS INCLUDE 55-FT INCLINED SHAFT WITH PRODUCTION LEVELAT 30 FT. NEWER WORKINGS LIE 350 FT TO NORTH AND INCLUDE VERTICAL SHAFT WITH DRIFTS ON 92-FT LEVEL; 70 FT OF DRIFT ON TARGET VEIN, 235 FT OF DRIFTON EAST AND RELATED VEINS, 115 FT OF CROSSCUTS

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit PRINCIPAL VEINS LIE IN JUNCTION RANCH FAULT ZONE CLOSE TO ITS INTERSECTION WITH CHERRY GULCH FAULT. VEINS STRIKE NW AND DIP 20 TO 60 NE AND CUT PREDOMINANTLY BIOTITE-QUARTZ GNEISS. OLDER WORKINGS ON TARGET VEIN: NEWER WORKINGS ON EAST VEIN: BOTH VEINS APPARENTLY BRANCHES IN FOOTWALL OF WNW-STRIKING FAULT. LENTICULAR URANIUM ORE BODIES ARE 1 TO 2 FT WIDE. PITCHBLENDE COATS FRACTURES AND ALTERED BRECCIA FRAGMENTS. STRUCTURAL ZONE ON JUNCTION RANCH FAULT CAN BE INTERPRETED SIMILAR TO BRECCIA REEFS IN RALSTON CREEK DISTRICT TO NORTH.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1983 Banke, Carl M. (Hasler, J. William) Colorado Geological Survey

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.