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Mammoth Prospect

Occurrence in Nye county in Nevada, 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. 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. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10044447
MRDS ID M231867
Record type Site
Current site name Mammoth Prospect
Alternate or previous names Mammoth Claim, Mammoth No. 1 Claim

Geographic coordinates

Geographic coordinates: -115.65226, 38.15384 (WGS84)
Elevation 2225
Relative position 3.5 MILES NW OF ADAVEN TOWN

Site location context

Political divisions (FIPS codes)

Nye(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Nyala(quadrangle 1:24,000 scale)

Quinn Canyon Range(quadrangle 1:100,000 scale)

Lund(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Sand Spring-Tikaboo Valleys(hydrologic unit)

Central Nevada Desert Basins(hydrologic accounting unit)

Central Nevada Desert Basins(hydrologic subregion)

Great Basin(hydrologic region)

Federal lands

Humboldt-Toiyabe National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Nevada Nye

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 003N 056E 02 NW OF NW Nevada

Comments on the location information

  • 3 LODE CLAIMS IN SAWMILL CANYON

Commodities

Commodity Importance
Fluorine-Fluorite Critical Tertiary

Comments on the commodity information

  • FLUORITE IS VERY LIGHT GRAY TO LIGHT GREENISH GRAY, CRYSTALLINE.

Materials information

Materials Type of material
Fluorite Ore
Quartz Gangue

Alteration

  • (Local) Silicified Limestone

Analytical data

Result THE "COONTAIL" ORE CONTAINS 22-35% FLUORITE AND 50-65% SILICA.

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic)
    Stratigraphic age (youngest) Late Ordovician
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Antelope Valley;Pogonip Group
    Rock description Antelope Valley;Pogonip Group

Nearby scientific data

(1) -115.65226, 38.15384
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description The Limestone Beds Strike Ne To Nw, Dipping 15-30w. Joints, Faults, Local Brecciation Of Jasperoid.

Ore body information

  • General form CEMENT
    Length 121.92M
    Width 45.72M
  • General form CEMENT
  • General form CEMENT
  • General form CEMENT
  • General form CEMENT

Controls for ore emplacement

  • Along Joints, Crosscutting Fractures, And Bedding.

Comments on the geologic information

  • THE LIMESTONE IS MEDIUM LIGHT GRAY TO MEDIUM DARK GRAY, MEDIUM CRYSTALLINE, AND VERY THIN TO THIN BEDDED.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Non-metallic
Deposit size Small
Significant No
Discovery year 1953
Discoverer Hubert And Vera Welch, Kay Ross

Mining district

District name Willow Creek District

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner U.S. Steel Corp.
    First year 1965
  • Type Owner
    Owner Wood, Norman
    First year 1976

Comments on the workings information

  • WORKINGS CONSIST OF EXTENSIVE CUTS AND TRENCHES, AND A 50 FT ADIT.

Comments on development

  • EXTENSIVE TRENCHING AND DRILLING IN 1957 BY UNION CARBIDE ORE CO. GEOPHYSICAL SURVEY BY U.S. STEEL IN 1965.

Reference information

Bibliographic references

  • Deposit

    SAINSBURY, CL AND KLEINHAMPL, FJ, 1969, FLUORITE DEPOSITS OF THE QUINN CANYON RANGE: USGS BULL. 1272-C, P. 12-13

  • Deposit

    PAPKE, KG, 1979, FLUORSPAR IN NEVADA: NEV. BUR. OF MINES AND GEOL., BULL. 93, P. 48-50

  • Deposit

    KRAL, V.E., 1951, NBMG BULL. 50.

  • Deposit

    HORTON, R.C., 1961, NBMG REPORT 1.

General comments

Subject category Comment text
Deposit CENTRAL CORE OF BRECCIATED, JASPERIZED LIMESTONE CONTAINS FLUORITE PRINCIPALLY AS A CEMENT OF BRECCIA FRAGMENTS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1981 Wong, George (Roberts, Ralph) U.S. Geological Survey
Updater 01-MAY-1982 La Pointe, D.D. (Tingley, J.V.) Nevada Bureau of Mines and Geology

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:

  • U.S. Steel Corp. — now part of United States Steel Corporation (2024)
    Mining operations largely divested over the late 20th century; the broader U.S. Steel entity was acquired by Nippon Steel in 2024 (mining footprint is now minimal).

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.

External references

Maps centered on this site

Authoritative Nevada resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.