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Pinto Valley

Producer in Gila county in Arizona, United States with commodities Copper, Gold, Molybdenum, Rhenium, Silver, Gemstone, Fluorine-Fluorite, Barium-Barite
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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. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Geologic structures
  13. Ore body information
  14. Controls for ore emplacement
  15. Economic information about the deposit and operations
  16. Mining district
  17. Mineral rights holdings
  18. Land status
  19. Ownership information
  20. Production statistics
  21. Reserves and resources
  22. Workings at the site
  23. Links to other databases
  24. Bibliographic references
  25. General comments
  26. Reporter information

Geologic information

Identification information

Deposit ID 10258292
MRDS ID M002863
MAS/MILS ID 0040070010
Record type Deposit
Current site name Pinto Valley
Alternate or previous names Pinto Valley Mine, Castle Dome Mine

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -110.9646, 33.41228 (WGS84)
Elevation 1220
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Gila(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Inspiration(quadrangle 1:24,000 scale)

Globe(quadrangle 1:100,000 scale)

Mesa(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Salt(hydrologic unit)

Salt(hydrologic accounting unit)

Salt(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

Tonto 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 Arizona Gila

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 001 N 014 E 19 Arizona

Commodities

Commodity Importance
Copper Primary
Gold Secondary
Molybdenum Secondary
Rhenium Tertiary
Silver Secondary
Gemstone Secondary
Fluorine-Fluorite Critical Tertiary
Barium-Barite Critical Tertiary

Materials information

Materials Type of material
Anglesite Ore
Chalcanthite Ore
Chalcocite Ore
Chalcopyrite Ore
Covellite Ore
Cuprite Ore
Galena Ore
Gold Ore
Malachite Ore
Molybdenite Ore
Pyrite Ore
Silver Ore
Sphalerite Ore
Turquoise Ore
Wavellite Ore
Wulfenite Ore
Barite Gangue
Calcite Gangue
Chlorite Gangue
Epidote Gangue
Fluorite Gangue
Gypsum Gangue
Kaolinite Gangue
Quartz Gangue
Sericite Gangue
Azurite Unknown

Alteration

  • (Local) Hydrothermal Alteration: weak propylitic, clay, quartz-sericite
  • (Local) Alteration phases zoned. silicification

Mineral occurrence model information

Model code 53
USGS model code 17
Deposit model name Porphyry Cu
Mark3 model number 4

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Lost Gulch Quartz Monzonite
    Stratigraphic age (youngest) Tertiary
    Chronological age 64
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite > Diabase
    Stratigraphic age (youngest) Tertiary
    Chronological age 64
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Tertiary
    Chronological age 64

Nearby scientific data

Ore Body (1) -110.9646, 33.41228
ListMap

Economic information

Geologic structures

Type of structure Local
Structure name NNW trending horst of quartz monzonite. Dome & Gold Gluch faults system

Ore body information

  • Strike N70E
    Dip 89W
    Thickness 370M
    Length 1460M
    Width 760M
    Depth to top 80M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 DISSEMINATED
    Shape of Orebody #1 MASSIVE
    Primary mode of Origin HYDROTHERMAL
    Secondary mode of Origin OXIDATION
    Primary Ore Control IGNEOUS
    Secondary Ore Control OTHER
    Degree of Wallrock Alter. SLIGHT
    Type of Wallrock Alter. #1 PROPYLITIC
    Type of Wallrock Alter. #2 INTERM ARGILLIC
    Type of Wallrock Alter. #3 SERICITIC
    Strike And Dip N70E:89W
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 880517
  • Area 1575HA
    Field Value
    Total Surface Area (HA) 1575
    Date of Last Modification 910418
  • General form Massive
    Strike N75E
    Dip 85S
    Thickness 335M
    Length 1460M
    Width 760M
    Depth to top 30M

Controls for ore emplacement

  • Closely spaced, nearly parallel fractures striking N75E, dip steeply S
  • Mineralization strong in diabase sill and quartz monzonite adjacent sill

Comments on the geologic information

  • A Distinct Zoning Pattern.

Economic information about the deposit and operations

Operation type Surface
Development status Producer
Commodity type Metallic
Deposit size Medium
Significant Yes
Discovery year 1881
Mining method Open Pit
Year of first production 1906
Milling method Flotation

Mining district

District name Globe-Miami District

Mineral rights holdings

Type of mineral rights Patented
Type of mineral rights Located Claim
Type of mineral rights Other

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Magma Copper Co., Pinto Valley Div.
    ID 201049
    Interest 100
    Home office Arizona
    Year 1987
    Last year 1996
  • Type Owner
    Owner Broken Hill Proprietary Co. Ltd.
    Home office Australia
    Year 1996
    First year 1996
    Last year 1999
  • Type Owner-Operator
    Owner BHP Billiton Group
    Interest 100
    Home office London, UK
    Year 2009
    First year 1999

Production statistics

  • Year 1973
    Description Total Ore Mined 212690 Mtpy
  • Year 1974
    Description Total Ore Mined 5506960 Mtpy
  • Year 1975
    Description Total Ore Mined 12606100 Mtpy
  • Year 1976
    Description Total Ore Mined 14179800 Mtpy
  • Year 1977
    Description Total Ore Mined 12247000 Mtpy
  • Year 1978
    Description Total Ore Mined 14341700 Mtpy
  • Year 1979
    Description Total Ore Mined 15633100 Mtpy
  • Year 1980
    Description Total Ore Mined 10037500 Mtpy
  • Year 1981
    Description Total Ore Mined 16772900 Mtpy
  • Year 1982
    Description Total Ore Mined 8776110 Mtpy
  • Year 1983
    Description Cu Recovered Via Waste Dumps Leach/Sx-Ew 6960 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 6960mt
  • Year 1983
    Description Mo Recovered From Ore Mtpy
  • Year 1983
    Description Cu Recovered From Ore Mtpy
  • Year 1983
    Description Ore Mined And Milled Mtpy
  • Year 1984
    Material Cu Recovered In Concentrates 37667 Mtpy\nMo Recovered In Concentrates 174 Mtpy
    Ore mined 10206600mt
    Description Ore Milled 10206600 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary in concentrates Copper Copper 37667mt
    Secondary in concentrates Molybdenum Molybdenum 174mt
  • Year 1985
    Material Cu Recovered From Ore 67987 Mtpy\nCu Recovered Via Waste Dumps Leach/Sx-Ew 7206 Mtpy\nMo Recovered From Ore 791 Mtpy\n
    Ore mined 18272500mt
    Description Ore Mined And Milled 18272500 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary recovered Copper Copper 75193mt
    Secondary recovered Molybdenum Molybdenum 791mt
  • Year 1986
    Material Ore Milled 17762700 Mtpy\nCu Recovered In Concentrates 64928 Mtpy\nMo Recovered In Concentrates 846 Mtpy\n
    Ore mined 19996200mt
    Description Ore Mined 19996200 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary Copper Copper 64928mt
    Secondary Molybdenum Molybdenum 846mt
  • Year 1987
    Material Ore Milled 19743000 Mtpy\nCu Recovered In Concentrates 58230 Mtpy\nCu Recovered In Waste Dumps Leach/Sx-Ew 6051 Mtpy\nMo Recovered In Concentrates 363 Mtpy
    Ore mined 19461000mt
    Description Ore Mined 19461000 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Secondary in concentrates Molybdenum Molybdenum 363mt
    Primary in conc & fr leach Copper Copper 64281mt
  • Year 1988
    Material Ore Milled 20347000 Mtpy
    Ore mined 20350000mt
    Description Ore Mined 20350000 Mtpy
  • Year 1989
    Material Cu Recovered In Waste Dumps Leach/Sx-Ew 6175 Mtpy \nCu Recovered In Concentrates 1470 Mtpy
    Description Cu Recovered In Concentrates 60369 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary in conc & fr leach Copper Copper 68014mt
  • Year 1990
    Material Ore Milled 21273000 Mtpy\nCu Recovered In Concentrates 73355 Mtpy \nCu Recovered In Waste Dumps Leach/Sx-Ew 6381 Mtpy\nMo Recovered In Concentrates 548 Mtpy\n\n\n\n\n\n
    Ore mined 21265000mt
    Description Ore Mined 21265000 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Secondary in concentrates Molybdenum Molybdenum 548mt
    Primary in conc & fr leach Copper Copper 79736mt
  • Year 1991
    Material Ore Milled 20556000 Mtpy\nCu Recovered In Concentrates 66343 Mtpy\nCu Recovered In Waste Dumps Leach/Sx-Ew 6890 Mtpy\nMo Recovered In Concentrates 630 Mtpy\n
    Ore mined 20555000mt
    Description Ore Mined 20555000 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Secondary recovered Molybdenum Molybdenum 630mt
    Primary in conc & fr leach Copper Copper 73233mt
  • Year 1992
    Material Ore Milled 20930000 Mtpy\nCu Recovered In Concentrates 76232 Mtpy\nCu Recovered In Waste Dumps Leach/Sx-Ew 8276 Mtpy
    Ore mined 20930000mt
    Description Ore Mined 20930000 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary in conc & fr leach Copper Copper 84508mt
  • Year 1993
    Material Cu Recovered In Concentrates 65351 Mtpy\nCu Recovered In Waste Dumps Leach/Sx-Ew 8358 Mtpy
    Ore mined 19627000mt
    Description Ore Mined 19627000 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary in conc & fr leach Copper Copper 73709mt
  • Year 1994
    Material Magma SEC 10-K for 1994. Pinto Valley only, does not include Miami leach operation, six miles away.\nhttp://sec.gov/Archives/edgar/data/61425/0000061425-95-000002.txt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary Cu Copper Copper 79200mt
  • Year 2000
    Material BHP Production Report for year ending June 30, 2001. This report also contains 2000 information.\nhttp://www.bhpbilliton.com/bbContentRepository/Reports/PRall.pdf
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary in conc & fr leach Copper Copper 18200mt
  • Year 2001
    Material BHP Production Report for year ending June 30, 2001. http://www.bhpbilliton.com/bbContentRepository/Reports/PRall.pdf
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary Cu Copper Copper 16400mt
  • Year 2002
    Material BHP Production Report for year ending June 30, 2002.\nhttp://www.bhpbilliton.com/bbContentRepository/Reports/NR43ProductionReport.pdf
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary Cu Copper Copper 12800mt
  • Year 2003
    Material BHP Production Report for year ending June 30, 2003.\nhttp://www.bhpbilliton.com/bbContentRepository/Reports/NR2403ProductionReport24July2003.pdf
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary Cu Copper Copper 10600mt
  • Year 2004
    Material BHP Production Report for year ending June 30, 2004.\nhttp://www.bhpbilliton.com/bbContentRepository/Reports/June04ProductionReport.pdf
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary Cu Copper Copper 9500mt
  • Year 2005
    Material BHP Production Report for year ending June 30, 2005. \nhttp://www.bhpbilliton.com/bbContentRepository/Reports/BHPBProdnRpt28July2005.pdf
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary Cu Copper Copper 9100mt
  • Year 2006
    Material BHP Production Report for year ending June 30, 2006.\nhttp://www.bhpbilliton.com/bbContentRepository/Reports/060725BHPBProdRptQE30Jun06.pdf
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary Cu Copper Copper 8500mt
  • Year 2007
    Material BHP Production Report for year ending June 30, 2007.\nhttp://www.bhpbilliton.com/bbContentRepository/Reports/060725BHPBProdRptQE30Jun06.pdf
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary Cu Copper Copper 7600mt
  • Year 2008
    Material BHP Production Report for the year ending June 30, 2008.\nhttp://www.bhpbilliton.com/bbContentRepository/docs/productionReport30June2008.pdf
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Secondary Ag Silver Silver 3510000g
    Secondary Au Gold Gold 53440g
    Primary Cu Copper Copper 33700mt
  • Year 2009
    Material BHP Production Report for year ending June 30, 2009.\nhttp://www.bhpbilliton.com/bbContentRepository/docs/2009Q2ProductionReport.pdf
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Secondary Ag Silver Silver 5661000g
    Secondary Au Gold Gold 28600g
    Secondary Mo Molybdenum Molybdenum 159mt
    Primary Cu Copper Copper 39500mt
  • Year 2010
    Material BHP Production Report for year ending June 30, 2010.\nhttp://www.bhpbilliton.com/bbContentRepository/docs/productionReportYearEnded30June2010.pdf
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Primary from leach Copper Copper 6200mt

Reserves and resources

  • Type In-situ
    Name low-grade leach
    Estimate year 2009
    Demonstrated 78000000mt ore
    Remarks BHP 2009 annual report p.71 \nhttp://www.bhpbilliton.com/bbContentRepository/docs/annualReport2009.pdf
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.19 wt-pct Copper Primary 2009
  • Type In-situ
    Estimate year 2008
    Total endowment 1438000000mt ore
    Remarks Castle Dome deposit total endowment. This amount of ore works out to 4.75 million mt Cu metal. \nSinger 2008, PorCuEX2008.xls.
    Commodity Subtype Grade units Group Importance Year
    Copper 0.33 wt-pct Copper Primary 2008
    Molybdenum 0.0055 wt-pct Molybdenum Secondary 2008
    Gold 0.034 g/mt Gold Secondary 2008
    Silver 2.2 g/mt Silver Secondary 2008
  • Type In-situ
    Estimate year 1987
    Total resources 113922000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.411 wt-pct Copper Primary 1987
    Molybdenum MoS2 0.015 wt-pct Molybdenum Secondary 1987
  • Type In-situ
    Estimate year 1993
    Indicated 140170000mt ore
    Demonstrated 140170000mt ore
    Total resources 140170000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.368 wt-pct Copper Major 1993
  • Type In-situ
    Estimate year 1982
    Total resources 143310000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.44 wt-pct Copper Primary 1982
  • Type In-situ
    Estimate year 1981
    Total resources 180770000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.447 wt-pct Copper Primary 1981
  • Type In-situ
    Name MIami unit in situ leach
    Estimate year 2009
    Demonstrated 214000000mt ore
    Remarks BHP 2009 annual report p.71\nhttp://www.bhpbilliton.com/bbContentRepository/docs/annualReport2009.pdf\nThis resource is 6 miles away from the Pinto Valley deposit.
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.31 wt-pct Copper Primary 2009
  • Type In-situ
    Estimate year 1993
    Indicated 353950000mt ore
    Demonstrated 353950000mt ore
    Total resources 353950000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.403 wt-pct Copper Major 1993
  • Type In-situ
    Name sulfide ore
    Estimate year 2009
    Demonstrated 191000000mt
    Remarks BHP 2009 annual report p.71 \nhttp://www.bhpbilliton.com/bbContentRepository/docs/annualReport2009.pdf
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.4 wt-pct Copper Primary 2009
  • Type In-situ
    Estimate year 1995
    Demonstrated 161243000mt ore
    Total resources 161243000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.392 wt-pct Copper Major 1995
  • Type In-situ
    Estimate year 1995
    Demonstrated 70396000mt ore
    Total resources 70396000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.225 wt-pct Copper Major 1995
  • Type In-situ
    Name sulfide ore stockpile
    Estimate year 2009
    Measured 448000000mt ore
    Remarks BHP 2009 annual report p.70 \nhttp://www.bhpbilliton.com/bbContentRepository/docs/annualReport2009.pdf
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.11 wt-pct Copper Primary 2009
  • Type In-situ
    Estimate year 1995
    Demonstrated 395809000mt ore
    Total resources 395809000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.12 wt-pct Copper Major 1995
  • Type In-situ
    Estimate year 1995
    Demonstrated 126814000mt ore
    Total resources 126814000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.36 wt-pct Copper Major 1995
  • Type In-situ
    Estimate year 1995
    Demonstrated 754262000mt ore
    Total resources 754262000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.228 wt-pct Copper Major 1995

Comments on the reserve resource information

  • Other Name: Castle Dome Includes: Sulfide Mill Ore 161,243,000 Mt @ 0.392% Cu Leach Ore Dumps 70,396,000 Mt @ 0.225% Cu Remaining On Dumps 395,809,000 Mt @ 0.12% Cu Slice 7/8 126,814,000 Mt @ 0.36% Cu Total 754,262,000 Mt @ 0.228% Cu
  • The Third Reserve Figures Is For Reserves Included In Magma'S Mine Plan For 1987-1997; The Fourth Figure Includes Additional Reserves Beyond Those Included In The Mine Plan.
  • The BHP 2009 annual report figures for reserves and resources are:
    low-grade leach - measured 15 Mt @ 0.2%Cu, indicated 58 Mt @ 0.19% Cu
    sulfide - measured 48 Mt @0.37% Cu, indicated 142 Mt 0.41% Cu
    sulfide stockpiles - measured 448 Mt 0.11% Cu
    http://www.bhpbilliton.com/bbContentRepository/docs/annualReport2009.pdf

Workings at the site

  • Type of workings Surface
    Area 380HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method OPEN PIT
    Swell Factor .58
    Percent Waste Rock 56.5
    Avg. Overburden Thickness 80
    Primary Material Cover M-HARD ROCKS
    Percentage 100
    Hardness of Ore HARD ROCKS
    Avg. Bench Height (meters) 14
    Max. Pit Slope (degrees) 42
    Capacity 56245
    Capacity Units MT ORE/DAY
    Unit Production Cost 1.52
    Units of Production $/MT ORE
    Operating Days per Year 365
    Operating Shifts per Day 3
    Year of Information 1987
  • Type of workings Surface/Underground
    Overall length 1828.8M
    Overall width 914.4M

Comments on the workings information

  • Open Pit-Have Mined The Top Of Porphyry Mountain; Early Development Was By Means Of Shafts And Tunnels Which Have Been Consumed By Pit Operations. In 1990, In-Situ And Dump Leach Operations.

Comments on development

  • 8 Patented Claims On Porphyry Mountain Held By Castle Dome Development Co From 1915-1924. Property Acquired By Pinto Valley Co Through Merger In 1924. Pinto Valley Acquired Adjacent Property Bringing The Total Number Of Claims At Porphyry Mountain To 37. Property Sold To Miami Copper Co In 1940 Who Incorporated It As Castle Dome Copper Company, A Wholly Owned Subsidiary Of Miami.

Reference information

Bibliographic references

  • Workings

    BANNING,W.R., 1983, METALLURGICAL SUPERINTENDENT WITH PINTO

  • Ownership

    NEWMONT MINING CORPORATION, 1983, NEWS RELEASE DATED MARCH

  • Reserve-Resource

    MAGMA COPPER CO. SEC FORM 10-K REPT. 12/31/92, P.18.

  • Deposit

    ARIZONA DEPT. OF MINES AND MINERAL RESOURCES. PRIMARY COPPER INDUSTRY OF ARIZONA SPECIAL REPORTS, NOS. 8-10 AND 13. (1983-1986 PRODUCTION)

  • Other Database

    CIMRI

  • Production

    PETERSON, 1962; ABM FILE DATA; SAWYER AND OTHERS, 1992.

  • Workings

    BROWN,C.T., 1983, VICE PRESIDENT, METALS WITH PINTO VALLEY

  • Reserve-Resource

    MAGMA COPPER CO., 1992 10K, P.18.

  • Ownership

    WORLD MINING, 1983, NEWMONT BUYS MIAMI OPERATIONS, JANUARY

  • Deposit

    WORLD MINING. SEPTEMBER 1983, P. 68. (1979-1982 PRODUCTION)

  • Reserve-Resource

    MAGMA COPPER CO., 1994 10-K, P.19,20.

  • Workings

    KENNEDY,A.D., 1983, MANAGER TECHNICAL SERVICES WITH PINTO

  • Deposit

    _____. AUGUST 1979, P. 57. (1975-1978 PRODUCTION)

  • Reserve-Resource

    MAGMA COPPER CO., 1993 10-K, P.17,18.

  • Deposit

    WORLD MINING YEARBOOK, CATALOG, SURVEY, AND DIRECTORY NUM-

  • Deposit

    BURGIN, L.B.,1976, TIME REQUIRED IN DEVELOPING SELECTED ARIZ

  • Reserve-Resource

    SAWYER AND OTHERS, 1992.

  • Deposit

    CITIES SERVICE 1981 ANNUAL REPORT, P.49.

  • Reserve-Resource

    Anonymous, 1975, Pinto Valley?another major porphyry copper open pit for Arizona: Mining Magazine, v. 133, no. 5, p. 344?351.

  • Deposit

    E/MJ 6/75 (MILL EQUIP LIST, REAGENT)

  • Deposit

    E/MJ 7/75 (POWDER FACTOR, DRILLING, CUT-OFF GRADES)

  • Deposit

    E/MJ 6/77 (TIRE LIFE, BUILDING SITES)

  • Deposit

    E/MJ INTERNATIONAL DIRECTORY OF MINING & MINERAL PROCESSING

  • Deposit

    MIN ENG 6/75 (GEOL.,EXPLOR.,PREPROD.,CONC. GRADE,CONC. PROD,

  • Deposit

    MIN MAG 11/75 (GEOL., EXPLOR., WATER SUPPLY)

  • Deposit

    PAYDIRT 8/28/72 (MINING EQUIP.)

  • Deposit

    PAYDIRT 6/75 (GEOL., PREPROD., DRILLING, MAINTENANCE)

  • Deposit

    PAYDIRT 4/25/77 (CAPACITIES)

  • Deposit

    PETERSON,N P, ET AL, 1951, GEOLOGY & ORE DEPOSITS OF THE

  • Deposit

    SKILL 5/13/72 (CAPACITY, POWER)

  • Deposit

    SKILL 4/28/73 (WATER SUPPLY)

  • Deposit

    SKILL 1/4/75 (BUILDING SIZES)

  • Deposit

    SKIL 7/15/75 (LANDS, PREPROD., MOLY CONC. GRADE, DRILLING,

  • Deposit

    TRIP NOTES BY R BAER 10/20/77 (BLASTING, MINING, MINE EQUIP,

  • Deposit

    WORLD MIN 9/75 (ENVIR.)

  • Deposit

    MAGMA COPPER COMPANY, PINTO VALLEY DIVISION. PERSONAL COM-

  • Deposit

    PETERSON, N. P. GEOLOGY AND ORE DEPOSITS OF THE GLOBE-MIAMI

  • Deposit

    U.S. GEOLOGICAL SURVEY. GLOBE QUADRANGLE (TOPOGRAPHIC MAP),

  • Deposit

    _____. INSPIRATION QUADRANGLE (TOPOGRAPHIC MAP), ARIZONA.

  • Deposit

    _____. MESA QUADRANGLE (TOPOGRAPHIC MAP), ARIZONA. 1 DEG.

  • Deposit

    ZABURUNOV, STEVEN A., MAGMA INDEPENDENCE: OLD RESOURCES, NEW

  • Deposit

    EPLER, BILL, PINTO VALLEY CLAIMS LARGEST- 25,000 GALLONS-

  • Deposit

    MAGMA COPPER CO., MAGMA UPDATE, 7/91, P.7.

  • Deposit

    SOUTHWESTERN PAY DIRT, MILL RECOVERIES AND EFFICIENCIES

  • Deposit

    MAGMA COPPER CO., PINTO VALLEY DIV., COMPANY HANDOUT, DATE ?

  • Deposit

    ENVIROMET, CORPORATE PROFILE: MAGMA COPPER CO., 10/94, P.8.

  • Deposit

    PIO, JOHN, PINTO VALLEY SETS 9 PRODUCTION AND COST RECORDS

  • Deposit

    PETERSON, N.P., 1962, GEOLOGY AND ORE DEPOSITS OF THE GLOBE-MIAMI DISTRICT, ARIZONA: USGS PP 342, P. 88.

  • Deposit

    PETERSON, N.P., GILBERT, C.M., AND QUICK, G.L., 1951, GEOLOGY AND ORE DEPOSITS OF CASTLE DOME AREA, GILA COUNTY, ARIZONA: USGS BULL 971, 134 P.

  • Deposit

    PETERSON, ET AL, 1946, ECON GEOL V. 41, P. 820-840.

  • Deposit

    ABM FILE DATA.

  • Deposit

    ABGMT CLIPPINGS FILE.

  • Deposit

    ABGMT-USBM FILE DATA.

  • Deposit

    PHILLIPS, K.A., BEARD, R.R., NIEMUTH, N.J., AND BARN, D.R., 1991, ACTIVE MINES IN ARIZONA--1992: AZ DEPARTMENT OF MINES AND MINERAL RESOURCES DIRECTORY 39, 20 P.

  • Deposit

    PEIRCE, H.W., 1969, GEM MATERIALS, IN USGS, ABM, AND USBR, MINERAL AND WATER RESOURCES OF ARIZONA: ABM BULLETIN 180, USGS BULLETIN 871, P. 359-364.

  • Deposit

    PHILLIPS, K.A., 1987, ARIZONA INDUSTRIAL MINERALS: ARIZONA DEPARTMENT OF MINES AND MINERAL RESOURCES MINERAL REPORT 4, 185 P.

  • Deposit

    SAWYER, M.B., GURMENDI, A.C., DALEY, M.R., AND HOWELL, S.B., 1992, PRINCIPAL DEPOSITS OF STRATEGIC AND CRITICAL MINERALS IN ARIZONA: UNITED STATES BUREAU OF MINES SPECIAL PUBLICATION, 334 P.

General comments

Subject category Comment text
Deposit Turquoise Was Produced From The Oxidized Part Of The Deposit. Hypogene Mineralization Confined Pincipally To The Quartz Monzonit. Massive Chalcopyrite Associated With The Diabase Sills.

Reporter information

Type Date Name Affiliation Comment
Updater 24-JUL-09 Anderson, Claire U.S. Geological Survey
Reporter 02-OCT-96 Ward, Doug U.S. Bureau of Mines
Updater 01-OCT-92 Orris, Greta J. U.S. Geological Survey
Reporter 21-FEB-84 Intermountain Field Operations Center (IFOC) U.S. Bureau of Mines
Reporter 01-MAY-83 Peterson, Jocelyn A. U.S. Geological Survey

Beyond USGS

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

Current status (per MSHA)

StatusActive since 02/02/2026
MSHA mine ID0201049
Mine name (MSHA)Pinto Valley Mine
Current operatorPinto Valley Mining Corp.
Current controller (parent)Capstone Copper Corp
Mine typeSurface (Metal / non-metal)

MSHA cross-reference per the original MRDS record. Mine status and operator reflect MSHA's last published Mines export (February 2025); MSHA's public bulk feed has been unavailable since, so this may be out of date. See the Mine Data Retrieval System for current status.

Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.

Maps centered on this site

Authoritative Arizona resources

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