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Spar Valley Mine North and South Orebodies

Past Producer in Hudspeth county in Texas, United States with commodity Fluorine-Fluorite
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Alteration
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Ownership information
  17. Reserves and resources
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. Reporter information

Geologic information

Identification information

Deposit ID 10100557
MRDS ID W701310
Record type Site
Current site name Spar Valley Mine North and South Orebodies
Alternate or previous names Spar Valley Shaft No. 1
Related records 10098124, 10202695

Geographic coordinates

Geographic coordinates: -105.04802, 30.93824 (WGS84)
Elevation 1676
Relative position 15 MI (24 KM) SW OF VAN HORN

Site location context

Political divisions (FIPS codes)

Hudspeth(county)

Texas(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Eagle Mountains NE(quadrangle 1:24,000 scale)

Indian Hot Springs(quadrangle 1:100,000 scale)

Marfa(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Salt Basin(hydrologic unit)

Rio Grande Closed Basins(hydrologic accounting unit)

Rio Grande Closed Basins(hydrologic subregion)

Rio Grande(hydrologic region)

Geographic areas

Country State County
United States Texas Hudspeth

Comments on the location information

  • IN SECTION 35, BLOCK 68, TOWNSHIP 9

Commodities

Commodity Importance
Fluorine-Fluorite Critical Primary

Materials information

Materials Type of material
Ankerite Gangue
Calcite Gangue
Quartz Gangue

Alteration

  • (Local) Fluoritization Of Limestone, Clay Alteration, Iron Oxide Staining Of Limestone

Mineral occurrence model information

Model code 238
USGS model code 32m
Deposit model name Manto fluorite

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Finlay Limestone
    Rock description Finlay Limestone
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous

Economic information

Ore body information

  • General form BLANKET
    Width 13.72M

Controls for ore emplacement

  • Replacement Along Bedding

Comments on the geologic information

  • THRUST AND NORMAL FAULTS WITH NORTH-NORTHWEST STRIKES WERE MAPPED IN THIS AREA. OTHER FAULTS STRIKE EAST-WEST TO EAST-NORTHEAST AND NORTHEAST. BEDS OF HIGH-GRADE ORE ARE SEPARATED BY BEDS OF SHALE WITH LOW FLUORITE CONTENT. DOWNDIP, THE OREBODIES TERMINATE ON A NORMAL FAULT AND A THRUST FAULT THAT MAY HAVE PREDATED FLUORITIZATION.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Non-metallic
Deposit size Small
Significant No
Discovery year 1919
Discoverer J.A. Mcdonald
Year of first production 1942

Mining district

District name Eagle Mountains

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Texas And Pacific Land Co.
  • Type Owner-Operator
    Owner Texas Fluorite Co.
    First year 1943
  • Type Owner-Operator
    Owner Western Fluorite Co.
  • Type Owner-Operator
    Owner J. And L. Fluorite Co.
    First year 1946
  • Type Owner-Operator
    Owner Texas Fluorspar Mines, Inc.
    First year 1948

Reserves and resources

  • Type In-situ
    Estimate year 1943
    Commodity Subtype Grade units Group Importance Year
    Fluorine-Fluorite CaF2 45 wt-pct Fluorine Major 1943

Comments on the reserve resource information

  • INFERRED RESERVES ESTIMATED AS 50,000 TO 65,000 TONS OF 40% CAF2 FOR THE NORTH AND SOUTH OREBODIES AND SIMILAR REPLACEMENT DEPOSITS.
  • ORE BLOCKED OUT TO 200 LEVEL

Workings at the site

  • Type of workings Surface/Underground
    Overall depth 60.96M

Comments on the workings information

  • ORIGINAL (1919) SHAFT ON NORTH OREBODY 20 DEEP WITH ADJACENT OPEN CUT. SHAFT 1 REACHED A DEPTH OF 200 FT (60 M) WITH LEVELS AT 80 FT AND 200 FT. DRIFTS ON THE 80 FT LEVEL EXTEND 30 FT NORTH AND 130 FT SOUTH OF SHAFT. THE OLD RED PIT ADIT ON THE SOUTH OREBODY, DRIVEN 1942, HAS BEEN DESTROYED BY TRENCHING.

Comments on development

  • DISCOVERED 1919, NOT DEVELOPED UNTIL 1942. SHAFT 1 REACHED A DEPTH OF 200 FT (60 M). ; ECON.COM: A 50 TPD FLOATATION MILL BUILT 1944-1945.

Reference information

Bibliographic references

  • Deposit

    PRICE, J. G., HENRY, C. D., AND STANDEN, A. R., 1983, ANNOTATED BIBLIOGRAPHY OF MINERAL DEPOSITS IN TRANS-PECOS TEXAS: BUREAU OF ECONOMIC GEOLOGY (TEXAS), MINERAL RESOURCE CIRCULAR NO. 73, 108 P.

  • Deposit

    UNIV TEX PUB 4301, P. 227-238.

  • Deposit

    USGS BULL 987, 98 P.

  • Deposit

    EXAMINED BY H.E. ROTHROCK AND ELLIOT GILLERMAN BETWEEN 1943 AND 1946.

  • Deposit

    TEST PITTING AND CORE DRILLING BY U.S. BUREAU OF MINES EARLY 1940'S

  • Deposit

    FIELD WORK BY TEXAS BUREAU OF ECONOMIC GEOLOGY 1943-1945.

  • Other Database

    CIMRI

  • Production

    (1) UTEX PUB 4301 P. 232. (2) PRICE AND OTHERS, 1983

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1990 Paidakovich, Matthew E. U.S. Geological Survey
Updater 01-AUG-1992 Long, Keith R. U.S. Geological Survey

Beyond USGS

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

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