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Tonopah

Past Producer in Humboldt county in Nevada, United States with commodities Copper, Molybdenum, Tungsten
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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. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Mineral rights holdings
  13. Ownership information
  14. Production statistics
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10125205
MRDS ID M030029
MAS/MILS ID 0320130047
Record type Site
Current site name Tonopah
Alternate or previous names Moly Tonopah, Jack
Related records 10037015, 10271300

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -117.25816, 41.20989 (WGS84)
Elevation 1743

Site location context

Political divisions (FIPS codes)

Humboldt(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Adam Peak(quadrangle 1:24,000 scale)

Osgood Mountains(quadrangle 1:100,000 scale)

McDermitt(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle Humboldt(hydrologic unit)

Humboldt(hydrologic accounting unit)

Black Rock Desert-Humboldt(hydrologic subregion)

Great Basin(hydrologic region)

Geographic areas

Country State County
United States Nevada Humboldt

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 039 N 042 E 33 C W2SW Nevada

Commodities

Commodity Importance
Copper Tertiary
Molybdenum Tertiary
Tungsten Critical Tertiary

Materials information

Materials Type of material
Calcite Unknown
Chalcopyrite Unknown
Chrysocolla Unknown
Epidote Unknown
Molybdenite Unknown
Powellite Unknown
Pyrite Unknown
Quartz Unknown
Scheelite Unknown

Nearby scientific data

Ore Body (1) -117.25816, 41.20989
ListMap

Economic information

Ore body information

  • Area 19HA
    Depth to top 0M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 REPLACEMENT
    Shape of Orebody #1 UNKNOWN
    Type of Orebody #2 FISSURE VEIN
    Primary mode of Origin SEDIMENTATION
    Secondary mode of Origin OTHER
    Primary Ore Control LITHOLOGY
    Secondary Ore Control FAULTING
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 CARBONATE SILIC
    Type of Wallrock Alter. #2 SILICIFICATION
    Avg. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 19
    Date of Last Modification 970904

Comments on the geologic information

  • GENERAL SIZE OF ORE BODY IS MEDIUM. TYPE OF ORE BODY IS ALSO CONTACT METASOMATIC. ORIGIN OF ORE BODY IS ALSO BY IGNEOUS INTRUSION. ORE IS ALSO CONTROLLED BY FRACTURING. STRIKE AND DIP OF MINERALIZED ZONE IS NORTH-NE:EAST. MINERALIZED ZONE AVERAGE DEMINSIONS:(METERS) LENGTH-- >907 WIDTH-- UNKNOWN THICKNESS-- UP TO 4.6 DEPTH-- UNKNOWN

Economic information about the deposit and operations

Operation type Surface
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1950

Mining district

District name Potosi District

Mineral rights holdings

Type of mineral rights Fee Ownership

Ownership information

  • Type Owner
    Owner David P Strickler
    Home office Colorado
    Year 1972
  • Type Owner-Operator
    Owner Cyprus Amax Minerals Co.
    Interest 100
    Home office Colorado
    Year 1992
    First year 1993

Comments on the ownership information

  • PROPERTY IS 183 TO 366 METERS WEST OF SOUTH EXTENSION GETCHELL GOLD MINE, OPERATED BY GETCHELL MINE INC.,1950-55. SEE REFERENCES FOR GETCHELL MINE FOR ADDITIONAL INFO.

Production statistics

  • Year 1990
    Description Past Prod-19,750 Tons Ore, Averaging 0.3% Wo3 Containing 5.925 Short Ton Ton Units Wo3(Nv Dir. Bib. Ref. #285). Short Ton Units=20 Lbs Of Contained Wo3.
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace WO3 Tungsten Tungsten 0wt-pct

Comments on the reserve resource information

  • AS OF 1991, THE MINE IS ON A CARE-MAINTENANCE STATUS.

Workings at the site

  • Type of workings Underground
    Length 366M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Hardness of Rock HARDROCK WITH LITTLE WATER
    Rock Support Chars. SUPPORTING
    Mine Support Chars. TIMBER
    Avg. Length of Adits (m) 76
    Capacity 100
    Capacity Units MT ORE/DAY
    Unit Production Cost 25
    Units of Production $/MT ORE
    Year of Information 1973

Reference information

Bibliographic references

  • Ownership

    AMERICAN MINES HANDBOOK. 1996. P. 83

  • Reserve-Resource

    RANDOL MINING DIRECTORY. U.S. MINES AND MINING COMPANIES 1996,1997 P. 275.

  • Deposit

    HESS, F. L., AND E. S. LARSON, JR. CONTACT-METAMORPHIC TUNGSTEN DEPOSITS OF THE UNITED STATES. U.S. GEOL. SURV. BULL. 725-D, 1921, PP. 245-309.

  • Deposit

    HOBBS, S. W. GEOLOGY OF THE NORTHERN PART OF THE OSGOOD MOUNTAINS, HUMBOLDT COUNTY, NEVADA. PH.D. DISS., YALE UNIV., NEW HAVEN, CT, 1948, 97 PP.

  • Deposit

    HOBBS, S. W., AND S. E. CLABAUGH. TUNGSTEN DEPOSITS OF THE OSGOOD RANGE, HUMBOLDT COUNTY, NEVADA. NV BUR. MINES AND GEOL. BULL. 44, 1946, 31 PP.

  • Deposit

    HOLMES, G. H., JR. EXPLORATION OF THE RILEY TUNGSTEN MINE, HUMBOLDT COUNTY, NEVADA. BUMINES RI 3945, 1946, 7 PP.

  • Deposit

    HOTZ, P. E., AND R. WILLDEN. GEOLOGY AND MINERAL DEPOSITS OF THE OSGOOD MOUNTAINS QUADRANGLE, HUMBOLDT COUNTY, NEVADA. UNITED STATES GEOLOGICAL SURVEY PROFESSIONAL PAPER 431, 1964, 128 PP.

  • Deposit

    WILLDEN, R. GEOLOGY AND MINERAL DEPOSITS OF HUMBOLDT COUNTY, NEVADA. NV BUREAU OF MINES AND GEOLOGY BULLETIN 59, 1964, 154 PP.

  • Deposit

    CYPRUS MINERALS COMPANY. ANNUAL REPORT FORM 10-K. DEC. 31, 1992. P.4.

General comments

Subject category Comment text
Deposit YEAR OF DISCOVERY IS BEFORE 1950.
Deposit GENERAL LOCATION IS ABOUT 53 KM NE OF WINNEMUCCA. MINING METHOD IS OPEN PIT AND OVERHAND STOPE.

Reporter information

Type Date Name Affiliation Comment
Reporter 04-SEP-1997 Koehler U.S. Bureau of Mines

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:

  • Cyprus Amax Minerals Co. — now part of Subsidiary of Freeport-McMoRan (2007)
    Formed by merger of Cyprus Minerals and AMAX in 1993; acquired by Phelps Dodge in 1999; Phelps Dodge acquired by Freeport-McMoRan in 2007.

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.