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  3. Mineral Resource Data System (MRDS)

Grover Test Site

Past Producer in Weld 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. 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. Ownership information
  18. Reserves and resources
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10013016
MRDS ID D009075
Record type Site
Current site name Grover Test Site
Alternate or previous names Grover Deposit
Related records 10143530

Geographic coordinates

Geographic coordinates: -104.26723, 40.8222 (WGS84)
Elevation 1539
Relative position 3.5 MI SW OF GROVER, CO

Site location context

Political divisions (FIPS codes)

Weld(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Hereford SE(quadrangle 1:24,000 scale)

Eaton(quadrangle 1:100,000 scale)

Greeley(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Crow(hydrologic unit)

South Platte(hydrologic accounting unit)

South Platte(hydrologic subregion)

Missouri(hydrologic region)

Geographic areas

Country State County
United States Colorado Weld

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 010N;010N 062W;061W 24,23,25,36;19,30,31 Colorado

Comments on the location information

  • LATITUDE, LONGITUDE GIVEN FOR CENTER, SECTION 24, TION, R62W.

Commodities

Commodity Importance
Uranium Primary

Materials information

Materials Type of material
Pyrite Gangue

Alteration

  • (Local) Alteration Is Present But Not Detectable In The Field By The Usual Color Changes

Analytical data

Result AVG GRADE 0.14% EU308

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
    Rock unit name Laramie Formation; Grover Sandstone Member, 0 To 100 Ft Thick;White River Formation; Tuffaceous Beds Possibly Source Of Uranium
    Rock description Laramie Formation; Grover Sandstone Member, 0 To 100 Ft Thick;White River Formation; Tuffaceous Beds Possibly Source Of Uranium
    Stratigraphic age (youngest) Late Cretaceous

Nearby scientific data

(1) -104.26723, 40.8222
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Cheyenne Basin

Ore body information

  • General form ROLL FRONT
    Thickness 2.74M
    Depth to top 73.46M
    Depth to bottom 250M

Controls for ore emplacement

  • Uranium Concentrated In Areas Of Rapid Sand Thinning Or At Constriction In Thickest Portion Of Channel Sands. Usually Where Sands Are 25 To 125 Ft Thick. Deposits Along Interface Between Altered/Unaltered Sand. Alteration In Cuttings Was Difficult To Detect So Exploration Was Guided By Radiometric Log Interpretation

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1970
Discoverer Joint Venture Of Getty Oil Company, Phelps Dodge Corporation, Trend Exploration Limited, During Initial Wide-Spaced Drilling Program For The Area.
Year of first production 1977
Year of last production 1978

Mining district

District name Grover/Keota Area

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Wyoming Mineral Corp.
    Home office 1709 Heath Parkway, Fort Collins, Co. 80521

Reserves and resources

  • Type In-situ
    Estimate year 1978
    Total resources 249000mt ore
    Commodity Subtype Grade units Group Importance Year
    Uranium U3O8 0.05 wt-pct Uranium Major 1978

Comments on the reserve resource information

  • READE, 1978

Comments on the workings information

  • TEST MINED ON A PILOT SCALE USING IN SITU MINING TECHNIQUES. RESTORATION OF THE SANDSTONE AQUIFER BEGAN AS MINING CEASED IN MAY 1978, ANDWAS COMPLETED IN FEBRUARY 1979, THE LIXIVIANTS TESTED WERE AMMONIUM BICARBONATE, CALCIUM BICARBONATE AND SODIUM BICARBONATE, ALL WITH HYDROGEN PEROXIDE OXIDANTS.

Comments on development

  • DISCOVERED DURING INITIAL WIDE-SPACED DRILLING PROGRAM. THREE HOLES, ABOUT ONE MILE APART, ENCOUNTERED MINERALIZATION, AS DID OFFSET HOLES.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit HOST ROCK 0 TO 100 FT THICK; IT IS GENERALLY A "WYOMING-TYPE" SOLUTION FRONT URANIUM DEPOSIT IN A FLUVIAL CHANNEL SANDSTONE; SINVOUS, ELONGATE WITH NARROW LATERAL WIDTH

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-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.