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

Ashley - Brush - Little Brush Creek Phosphate Deposit

Past Producer in Uintah county in Utah, United States with commodity Phosphorus-Phosphates
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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Land status
  14. Ownership information
  15. Reserves and resources
  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 10015160
MRDS ID DB00308
Record type Site
Current site name Ashley - Brush - Little Brush Creek Phosphate Deposit

Geographic coordinates

Geographic coordinates: -109.48461, 40.6069 (WGS84)
Elevation 1835
Relative position POINT LOCATION IS THE STAUFFER CHEMICAL MINE SITE WHICH IS 12 MILES NE OF VERNAL

Site location context

Political divisions (FIPS codes)

Uintah(county)

Utah(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Donkey Flat(quadrangle 1:24,000 scale)

Dutch John(quadrangle 1:100,000 scale)

Vernal(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Green(hydrologic accounting unit)

Lower Green(hydrologic subregion)

Upper Colorado(hydrologic region)

Geographic areas

Country State County
United States Utah Uintah

Public Land Survey System information

Meridian Township Range Section Fraction State
Salt Lake 002S 022E Utah

Comments on the location information

  • DEPOSIT COVERS LARGE AREA INCLUDING MANY TOWNSHIPS

Commodities

Commodity Importance
Phosphorus-Phosphates Primary

Materials information

Materials Type of material
Shale Ore
Calcite Gangue
Chert Gangue
Dolomite Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Mudstone
    Rock unit name Park City Formation
    Rock description Park City Formation
    Stratigraphic age (youngest) Late Permian
    Stratigraphic age (youngest) Late Permian
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Dolomite

Nearby scientific data

(1) -109.48461, 40.6069
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Uinta Mtn. Uplift

Ore body information

  • General form TABULAR - BLANKET
    Strike N - E
    Dip 7 DEG S
    Thickness 7.62M
    Length 25748.8M
    Width 6437.2M
    Depth to top 0M
    Depth to bottom 6.1M

Comments on the geologic information

  • PHOSPHATE IS GENERALLY FOUND WITHIN LOWER 30 FT. OF PARK CITY FM.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Non-metallic
Deposit size Large
Significant No
Discovery year 1915
Discoverer J. H. Ratliff
Year of first production 1961

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Stauffer Chemical Co.
    Home office P.O. Box 89 Mt. Pleasant,Tn. 38474 Phone(615)379-7781 Attn: George A. Herr

Reserves and resources

  • Type In-situ
    Estimate year 1955
    Total resources 1133000mt ore
    Commodity Subtype Grade units Group Importance Year
    Phosphorus-Phosphates P2O5 20 wt-pct Phosphorus Major 1955
  • Type In-situ
    Estimate year 1964
    Commodity Subtype Grade units Group Importance Year
    Phosphorus-Phosphates P2O5 20 wt-pct Phosphorus Major 1964

Comments on the reserve resource information

  • RESOURCE ESTIMATE INCLUDES PHOSPHATE FROM SURFACE TO 1000 FT BELOW STREAM LEVEL

Workings at the site

  • Type of workings Surface
    Area 72.846HA
    Overall length 1219.2M
    Overall width 609.6M

Comments on the workings information

  • SURFACE PIT OPERATION 12 MILES NE OF VERNAL, NUMEROUS SMALL PROSPECT PITS ALONG OUTCROP. OVERALL AREA OF WORKINGS IS ESTIMATE

Comments on development

  • DEPOSIT OUTCROP IS ON THE PATENTED RATLIFF CLAIMS AND NATIONAL FOREST SERVICE LAND.

Reference information

Bibliographic references

  • Deposit

    KING, DUNCAN, 1964 , SAN FRANCISCO PHOSPHATE DEPOSIT IN THE UINTA BASIN IN GUIDEBOOK TO THE GEOLOGY AND MINERAL RESOURCES OF THE UINTA BASIN: INTERMTN. ASSOC. PETROLEUM GEOLOGISTS.

  • Deposit

    KINNEY, D. M., 1955 , GEOLOGY OF THE UINTA RIVER - BRUSH CREEK AREA DUCHESNE AND UINTAH COUNTIES, UTAH: U. S. GEOL SURVEY BULL. 1007

  • Deposit

    CHENY, THOMAS, 1957 , PHOSPHATE IN UTAH: UTAH GEOL. AND MINERALOG. SURVEY BULL. 59 .

  • Deposit

    PRUITT, R. G., 1961 , THE MINERAL RESOURCES OF UINTAH COUNTY: UTAH GEOL. AND MINERALOG. SURVEY BULL. 71

  • Reserve-Resource

    KINNEY, D. M., 1955 , GEOLOGY OF THE UINTA RIVER - BRUSH CREEK AREA

General comments

Subject category Comment text
Deposit THERE TWO ORE ZONES, THE LOWER ORE IS APPX. 5 FT. THICK, THE UPPER ORE IS APPX. 15 FT. THICK.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1978 Mccarthy, Blair M. Bureau of Land Management

Beyond USGS

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

Operator history (post-MRDS)

MRDS records operators as of each record's last update (≤ 2019). Some of the operators listed here have since changed hands or dissolved:

  • Stauffer Chemical Co. — dissolved ~1985
    Acquired by Rhône-Poulenc in 1985; agricultural and industrial chemical businesses dispersed through multiple owners over the following two decades.

Curated by qvyshift.com from publicly-reported M&A activity (SEC filings, press releases, USGS Mineral Yearbooks). Not authoritative — verify against primary sources before relying on it. The MSHA panel above is the current authoritative source for actively-permitted mines.

Maps centered on this site