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Golden Gate Group

Past Producer in Pima county in Arizona, United States with commodities Gold, Silver, Lead, Copper, Zinc
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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. Production statistics
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10039408
MRDS ID M050041
Record type Site
Current site name Golden Gate Group
Alternate or previous names U.S. Grant
Related records 10283576

Geographic coordinates

Geographic coordinates: -110.76568, 31.80874 (WGS84)
Elevation 1670
Relative position 28 MILES SE OF TUCSON.

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Helvetia(quadrangle 1:24,000 scale)

Fort Huachuca(quadrangle 1:100,000 scale)

Nogales(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Rillito(hydrologic unit)

Santa Cruz(hydrologic accounting unit)

Middle Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

Coronado 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 Pima

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 19S 15E 01 Arizona

Comments on the location information

  • SE 1/4 SECTION 1, NE 1/4 SECTION 12.

Commodities

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

Comments on the commodity information

  • GALENA IN SMALL STRINGERS IN SHEARED LIMESTONE - SHALE.

Materials information

Materials Type of material
Galena Ore
Malachite Ore

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
    Rock unit name Willow Canyon Formation Congl. And Siltstone.;Martin Form Dolomite
    Rock description Willow Canyon Form Congl. And Siltstone.;Martin Form Dolomite

Nearby scientific data

(1) -110.76568, 31.80874
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Homoclinal ; Reg.Trends: Tilting And Broad Open Folds In S. And Extensive Faulting In N.
Type of structure Local
Structure description Thrust And Normal Faulting - Fracture Zones.

Ore body information

  • General form IRREGULAR LENSES, BUNCHES
    Thickness 4.57M

Controls for ore emplacement

  • Along Thrust Fault Contacts Of Limestone-Sediments.

Comments on the geologic information

  • ORE GEN IN LIME-SILICATE ZONES CONTROLLED BY FAULTS AND FRACTURES. ; GEOL.DESC: AGE OF MINERALIZATION BELIEVED TO BE THAT OF THE QUARTZ LATITE INTRUSIVE OF DREWES - 1971. ; REG.COM: STRUCTURE IN DISTRICT IS THRUST FAULTING - HIGH ANGLE NORMAL FAULTING AND FOLDING.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1925
Year of last production 1969

Mining district

District name Helvetia-Rosemont District

Land status

Ownership category National Forest

Production statistics

  • Year 1969
    Period 1880-1969
    Material ORE
    Accuracy Estimate
    Description Cp_Grade: ^1 Oz Au/Ton, 3 Oz Ag/Ton, 4% Pb, Minor Zn, Cu
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Lead Lead 4wt-pct
    Ore Silver Silver 85g/mt
    Ore Gold Gold 28g/mt

Workings at the site

  • Type of workings Underground
    Length 18.29M

Comments on the workings information

  • NUMEROUS SMALL SHAFTS, TUNNELS, ADITS, AND OPEN CUTSA M140

Comments on development

  • OPERATORS INCLUDED ARIZONA MINING AND REFINING CO., E.C. RANNEY

Reference information

Bibliographic references

  • Deposit

    SCHRADER, F. C. 1915 USGS BULL. 582.

  • Deposit

    ARIZONA BUREAU OF MINES 1971 FIELDNOTES V. 1 NO 2

  • Deposit

    DREWES, H. 1971 USGS MAP I-613 (SAHUARITA QUAD).

  • Deposit

    KEITH,S.B.,1974,INDEX OF MINING PROPERTIES IN PIMA COUNTY,ARIZONA:ARIZONA BUREAU OF MINES BULLETIN 189, P.126.

  • Deposit

    1909 RECON F. C. SCHRADER U.S.G.S. BULL. 582

  • Deposit

    1971 DIREXPL ANACONDA-POSSIBLE NEW PORPH. COPPER DEPOSIT.

  • Deposit

    1971 GEOLMAP H. DREWES U.S.G.S. MAP I-613.

General comments

Subject category Comment text
Deposit THE STRATIGRAPHIC UNITS USED ARE THOSE OF H. DREWES - 1971 USGS MAP I-613 ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Deposit ORE APPARENTLY IN SILICIOUS POCKETS, VEINLETS, AND FILMS ON SLICKENSIDES.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1972 Keith, William J. U.S. Geological Survey

Beyond USGS

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

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.