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  3. Mineral Resource Data System (MRDS)

Magma Chief Copper Mine

Producer in Pinal county in Arizona, United States with commodities Silver, Copper, Gold, Manganese, Zinc, Lead
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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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  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. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. Reporter information

Geologic information

Identification information

Deposit ID 10048315
MRDS ID M899883
Record type Site
Current site name Magma Chief Copper Mine
Alternate or previous names Magma Chief Mine
Related records 10186390

Geographic coordinates

Geographic coordinates: -111.0982, 33.31536 (WGS84)
Elevation 1097
Location accuracy 100(meters)
Relative position ABOUT 2 MILES SOUTH WEST OF KINGS CROWN PEAK, Location Measured To Adit Symbol On Map In Area Of Watson Claim

Site location context

Political divisions (FIPS codes)

Pinal(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Superior(quadrangle 1:24,000 scale)

Mesa(quadrangle 1:100,000 scale)

Mesa(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle Gila(hydrologic unit)

Middle Gila(hydrologic accounting unit)

Middle Gila(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 Pinal

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 001S 012E 26 NE Arizona

Comments on the location information

  • THE ORIGINAL BALTIMORE SHAFT OF THE MAGMA CHIEF WAS LOCATED IN SECTION 24 SW. ; INFO FROM LAND.ST :(1979)

Commodities

Commodity Importance
Silver Primary
Copper Secondary
Gold Secondary
Manganese Critical Tertiary
Zinc Critical Tertiary
Lead Tertiary

Materials information

Materials Type of material
Pyrolusite Ore
Wad Ore
Calcite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Dacite
    Stratigraphic age (youngest) Late Permian
    Stratigraphic age (youngest) Paleocene
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Escabrosa Limestone;Martin Limestone
    Rock description Escabrosa Limestone;Martin Limestone

Nearby scientific data

(1) Paleozoic sedimentary rocks
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Ew Trending Faults Cutting N-S Trending Fault Systems, Ew Conley Springs Fault Is 1/4 Mile N Of Mine

Ore body information

  • General form LENSES
    Strike N10W
    Dip 20 TO 30 NE
    Thickness 3.66M

Controls for ore emplacement

  • Contact Of Martin Limestone And Escabrosa Limestone

Comments on the geologic information

  • FAULTING AND INTRUSIONS AT SILVER KING 1 MILE NE ARE CRET-PALEO IN AGE.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1940
Year of last production 1947

Mining district

District name Pioneer District

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner K. Pomeroy (1940'S)
  • Type Owner
    Owner Magma Copper Co.

Workings at the site

  • Type of workings Underground
    Length 685.8M
    Overall depth 615.7M

Comments on the workings information

  • OLDEST WORKINGS IS BALTIMORE TUNNEL; LARGEST WORKINGS IS WATSON TUNNEL, RUNNING EAST-WEST; THERE ARE TWO SHORTER TUNNELS ON PICKET POST CLAIM

Comments on development

  • CLAIMS INCLUDED BALTIMORE, WATSON, PICKETPOST, LONEWEDGE, PALACE, TUNA, GERALD CANLSER; MAGMA CHIEF COPPER CO. DUG WATSON AND BALTIMORE TUNNEL AROUND 1917. SAME MAGMA CHIEF COPPER COMPANY ALSO OWNED THE MAGMA CHIEF MINE IN BUNKER HILL DISTRICT

Reference information

Bibliographic references

  • Deposit

    ABGMT CLIPPINGS FILES

  • Deposit

    ABGMT-USBM FILE DATA

  • Deposit

    AZ DEPT MIN RESOURCES FILE DATA

  • Deposit

    FARNHAM,L.L., MANGANESE ORE DEPOSITS IN ARIZONA, 1930, ABM BULLETIN 127 P84

  • Deposit

    SHORT, M.N., GEOLOGY AND ORE DEPOSITS OF THE SUPERIOR MINING AREA, ARIZONA, 1943ABM BULLETIN 151, PLATE I

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-82 Roth, Frances A. (Gest, Don E.) Arizona Bureau of Geology and Mineral Technology

Beyond USGS

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

External references

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.