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Horseshoe Basin Occurrence

Occurrence in Pima county in Arizona, United States with commodities Iron, Copper, Gold
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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. Ore body information
  11. Economic information about the deposit and operations
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10026748
MRDS ID M000061
Record type Site
Current site name Horseshoe Basin Occurrence
Alternate or previous names Ballam
Related records 10258927

Geographic coordinates

Geographic coordinates: -112.13766, 32.12733 (WGS84)
Elevation 853
Relative position AT QUIJOTOA, 3 MILES SW OF TRADING POST

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Maish Vaya(quadrangle 1:24,000 scale)

Ajo(quadrangle 1:100,000 scale)

Ajo(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Santa Rosa Wash(hydrologic unit)

Santa Cruz(hydrologic accounting unit)

Middle Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

BIA(Federal land areas administered by BIA)

Geographic areas

Country State County
United States Arizona Pima

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 015S 002E 14 Arizona

Comments on the location information

  • USBM FILE'S LONG IS INCORRECT (112-29-30W)

Commodities

Commodity Importance
Iron Tertiary
Copper Tertiary
Gold Tertiary

Materials information

Materials Type of material
Ilmenite Ore
Magnetite Ore
Malachite Ore

Analytical data

Result CHARACTER SAMPLES BY THE BUREAU OF MINES: MAGNETITE FACIES
Result 50.6 % FE, 1.0 % TIO2 , 0.3 % MN, 19.0 % SIO2 , 0.21 % P, 0.08 % S: SPECULAR HEMATITE FACIES
Result 49.8 % FE, 0.5 % TIO2 , 0.1 % MN, 24.4 % SIO2 , 0.02 % P, 0.08 % S: METALLURGICAL CHIP COMPOSITE
Result 50.2 % FE, 0.75 % TIO2 , 0.2 % MN, 21.7 % SIO2 , 0.12 % P, 0.08 % S.

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -112.13766, 32.12733
ListMap

Economic information

Ore body information

  • General form BANDS, INTERMITTENT
    Strike N 30 W
    Dip 75 NE
    Length 4827.9M
    Width 91.44M
    Depth to bottom 152.4M

Comments on the geologic information

  • EXTENSIVE MAGNETITE - SAND PLACER DEPOSITS CONTAINING GOLD ARE PRESENT IN THE DESERT FLOOR.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Reference information

Bibliographic references

  • Deposit

    HARRER, C. M., 1964 , RECONNAISSANCE OF IRON RESOURCES IN ARIZONA: USBM IC 8236 , P. 82

General comments

Subject category Comment text
Deposit BANDS OF MINERALIZATION WERE FOUND IN A ZONE OF HIGHLY EPIDOTIZED GRANITE, RANGING FROM 100 TO 300 FEET WIDE. INDIVIDUAL BANDS OF MAGNETITE AND HEMATITE ARE 4 TO 30 FEET THICK.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1979 Johnson, Kris H. (Creasey, S.C.) 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.