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  3. Mineral Resource Data System (MRDS)

Derby Claims

Occurrence in Maricopa county in Arizona, United States with commodity Manganese
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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. Host and associated rocks
  8. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Land status
  13. Ownership information
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10092679
MRDS ID M800250
Record type Site
Current site name Derby Claims

Geographic coordinates

Geographic coordinates: -113.28965, 33.36979 (WGS84)
Elevation 396
Location accuracy 1000(meters)
Relative position ABOUT 32 MILES SE OF SALOME ON PLAIN S OF EAGLETAIL MOUNTAINS, Location Estimated From Description In Usgs Bull. 710.

Site location context

Political divisions (FIPS codes)

Maricopa(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Columbus Peak(quadrangle 1:24,000 scale)

Little Horn Mountains(quadrangle 1:100,000 scale)

Phoenix(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Gila(hydrologic unit)

Lower Gila(hydrologic accounting unit)

Lower Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management AZ)

Bureau of Land Management AZ BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Arizona Maricopa

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 001S 010W 04 Arizona

Comments on the location information

  • USGS BULL 710 DESCRIBES THE CLAIMS AS BEING IN MARICOPA CO. BUT ACCOMPANYING MAP PLACES THEM TO THE WEST IN YUMA CO

Commodities

Commodity Importance
Manganese Critical Tertiary

Analytical data

Result ASSAY YIELDED 28% MN

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite

Nearby scientific data

(1) -113.28965, 33.36979
ListMap

Economic information

Ore body information

  • Thickness 0.61M
    Length 30.48M
    Width 30.48M

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1918

Mining district

District name Eagle Tail District

Land status

Ownership category Federal

Ownership information

  • Type Owner
    Owner Derby, T. G.
    First year 1918

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit DIMENSIONS GIVEN ARE OF RHYOLITE KNOB IN WHICH MN IS FOUND

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-81 Peterson, Jocelyn A. 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.