Bronx Mine

Past Producer in Gila county in Arizona, United States with commodities Molybdenum, Silver, Gold, Copper, Lead
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. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10027088
MRDS ID M001974
Record type Site
Current site name Bronx Mine
Related records 10160962

Geographic coordinates

Geographic coordinates: -110.97681, 33.36619 (WGS84)
Relative position 1.75 MI NE OF PINAL RANCH.

Site location context

Political divisions (FIPS codes)

Gila(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Pinal Ranch(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 001S 014E 06 CENTER OF NEAR S LINE Arizona

Commodities

Commodity Importance
Molybdenum Primary
Silver Secondary
Gold Secondary
Copper Tertiary
Lead Tertiary

Comments on the commodity information

  • IN 1942, OWNER CLAIMED A 12 FT VEIN IN WHICH 7 FT CARRIED 1.04% MO.

Materials information

Materials Type of material
Chalcocite Ore
Chalcopyrite Ore
Ferrimolybdite Ore
Malachite Ore
Molybdenite Ore
Pyrite Ore
Fluorite Gangue
Muscovite Gangue
Quartz Gangue

Alteration

  • (Local) Oxidation Of Pyrite, Chalcopyrite, Molybdenite; Granite Replaced B Y Quartz & Muscovite

Analytical data

Result 1935 ASSAY: $11.20 AU, $27.80 AG, $11.70 CU (6.5%). ANOTHER SAMPLE HAD 1.77-5% MO.

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Paleocene

Nearby scientific data

(1) -110.97681, 33.36619

Economic information

Ore body information

  • Strike NE
    Dip 80 SE
    Length 304.8M
    Width 0.91M

Controls for ore emplacement

  • Quartz-Muscovite Veins In Schultze Granite-Transition Zone Of Middle Of Vein To Muscovite Envelope

Economic information about the deposit and operations

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

Mining district

District name Summit District

Land status

Ownership category National Forest
Area name Tonto National Forest

Comments on the production information

  • MOLYBDENUM ORE MINED DURING WWI SAID TO HAVE BEEN STOCKPILED BUT W ASHED AWAY BY A FLASH FLOOD. CLAIMED TO HAVE PRODUCED $60,000 IN AU

Workings at the site

  • Type of workings Surface
    Length 167.64M

Comments on the workings information

  • 3 TUNNELS, ONE OF WHICH WAS CAVED IN 1939.

Comments on development

  • 18 CLAIMS. PROPERTY WORKED IN 1890'S AS A HIGH GRADE CU, AG, AU MINE.

Reference information

Bibliographic references

  • Deposit

    PETERSON, N.P., 1962, GEOL. AND ORE DEPOSITS OF THE GLOBE-MIAMI DISTRICT, ARIZ.: USGS PROF. PAPER 342, P. 133.

  • Deposit

    PETERSON, 1963, USGS BULL 1741-H, P. 16.

  • Deposit

    ADMR, 1962, MOLYBDENUM PROSPECTS IN AZ.

  • Deposit

    ABM FILE RECORDS.

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit VEINS WIDEST AND MOST STRONGLY MINERALIZED AT BOTTOM OF CANYON SUGGESTING OUTCROPS ARE NEAR UPPER LIMITS OF MINERALIZATION. ORE OCCURS IN STRINGERS TO 3 FT WIDE ZONES.
Deposit THIS REPORT REPRESENTS A MERGER OF ORIGINAL RECORD M001974 WITH RECORD M001974 OF JAN WILT IN MOLYBDENUM FILE, CONTACT PERSON T.G. THEODORE, USGS. THIS RECORD CONTAINS DATA FROM DUPLICATE RECORD D000314 OF R.U. KING WHICH HAS BEEN DELETED FROM MAIN MRDS. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-83 Peterson, Jocelyn A. U.S. Geological Survey
Updater 01-MAR-94 Orris, Greta J. U.S. Geological Survey

Beyond USGS

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

Authoritative Arizona resources

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