1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Golden Gate

Past Producer in Cochise county in Arizona, United States with commodities Manganese, Copper
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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. Land status
  18. Ownership information
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10027012
MRDS ID M001715
Record type Site
Current site name Golden Gate
Related records 10234019

Geographic coordinates

Geographic coordinates: -109.91343, 31.4357 (WGS84)

Site location context

Political divisions (FIPS codes)

Cochise(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bisbee(quadrangle 1:24,000 scale)

Douglas(quadrangle 1:100,000 scale)

Douglas(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper San Pedro(hydrologic unit)

San Pedro-Willcox(hydrologic accounting unit)

Middle Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Geographic areas

Country State County
United States Arizona Cochise

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 023S 024E 16 NE OF NW Arizona

Comments on the location information

  • SE OF QUEEN HILL.

Commodities

Commodity Importance
Manganese Critical Primary
Copper Secondary

Materials information

Materials Type of material
Bornite Ore
Chalcocite Ore
Chalcopyrite Ore
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Gossan With Mn And Fe Oxides Induced By Hydrothermal Metamorphism

Mineral occurrence model information

Model code 74
USGS model code 19b
Deposit model name Replacement Mn

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Rock unit name Sacramento Hill Stock
    Rock description Sacramento Hill Stock
    Stratigraphic age (youngest) Jurassic
    Chronological age 170.5
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Escabrosa Limestone;Naco Group Limestone
    Rock description Escabrosa Limestone;Naco Group Limestone

Nearby scientific data

(1) -109.91343, 31.4357
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Pre-Mineralization Faulting And Tilting
Type of structure Local
Structure description Main Fault Directions, N10w To N40e, S30w To N50w, Pre-Mineralization

Ore body information

  • General form IRREGULAR
    Strike N80W
    Dip 80N
    Length 91.44M
    Width 1.52M

Controls for ore emplacement

  • Ore Bodies Near Dikes And Sills, And Faulting And Associated Brecciation

Comments on the geologic information

  • DEPOSIT IS CLOSE TO THE CONTACT BETWEEN THE NACO AND ESCABROSA LIMESTONES.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Medium
Significant No

Mining district

District name Warren District

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Phelps Dodge Corp.

Comments on the production information

  • SHIPMENTS MADE DURING WORLD WAR I, THE BULK OF THE PRODUCTION OF 800 TO 900 TONS WAS SHIPPED TO BESSEMER, ALABAMA

Comments on the workings information

  • LARGEST OPEN CUT WAS ABOUT 150 FT LONG, 3 TO 5 FT WIDE, AND 25 FT OR MORE IN DEPTH.

Reference information

Bibliographic references

  • Deposit

    USGS BULL. 710, 1920, PL. IV, P. 107. ARIZ. B. M. BULL. 127, 1930, P. 39.

  • Deposit

    KEITH, S.B., 1973, ARIZONA BUREAU OF MINES BULLETIN 187, P. 87.

  • Deposit

    WILSON AND BUTLER, 1930, ABM BULL 127, P. 39.

  • Deposit

    FARNHAM, USBM IC 7990, P. 15.

General comments

Subject category Comment text
Deposit MOSTLY HARD MANGANESE OXIDES WITH COPPER STAINING ALONG IRREGULAR FRACTURE ZONE CUTTING LIMESTONE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1972 Gere W. U.S. Geological Survey
Updater 01-JAN-1982 Laraba, Peter (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.

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:

  • Phelps Dodge Corp. — acquired by Subsidiary of Freeport-McMoRan (2007)
    Acquired by Freeport-McMoRan Copper & Gold in 2007 in what was then the largest mining-industry deal ever (~US$26 B).

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.

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.