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

Ajo Placers

Producer in Pima county in Arizona, United States with commodity 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. Economic information about the deposit and operations
  11. Mining district
  12. Land status
  13. Links to other databases
  14. Bibliographic references
  15. Reporter information

Geologic information

Identification information

Deposit ID 10026745
MRDS ID M000040
Record type Site
Current site name Ajo Placers

Geographic coordinates

Geographic coordinates: -112.85518, 32.35871 (WGS84)
Elevation 549
Relative position 1 MILE E AND SE OF TOWN OF AJO

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Ajo South(quadrangle 1:24,000 scale)

Ajo(quadrangle 1:100,000 scale)

Ajo(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Tenmile Wash(hydrologic unit)

Lower Gila(hydrologic accounting unit)

Lower Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Geographic areas

Country State County
United States Arizona Pima

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 012S 006W 23,26 Arizona

Comments on the location information

  • ADJACENT TO THE NEW CORNELIA MINE, CORNELIA ARROYO.

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Stratigraphic age (youngest) Holocene
    Stratigraphic age (youngest) Paleocene
  • Host or associated Host
    Rock type Unconsolidated Deposit > Gravel

Nearby scientific data

(1) -112.85518, 32.35871
ListMap

Economic information

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Ajo District

Land status

Ownership category Private

Comments on the production information

  • GOLD WAS RECOVERED WHEN NEW CORNELIA COPPER MINE WAS CLOSED. NO PLACER GOLD HAS BEEN RECOVERED SINCE.

Reference information

Bibliographic references

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.