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Poorman Prospect

Past Producer in Yuma county in Arizona, United States with commodities Gold, Silver, Molybdenum
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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. Reporter information

Geologic information

Identification information

Deposit ID 10027219
MRDS ID M002526
Record type Site
Current site name Poorman Prospect
Alternate or previous names Desert Dwarf
Related records 10234807

Geographic coordinates

Geographic coordinates: -114.09577, 32.59065 (WGS84)
Elevation 162
Relative position NORTHEASTERN END OF THE WELLTON HILLS

Site location context

Political divisions (FIPS codes)

Yuma(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Wellton SE(quadrangle 1:24,000 scale)

Yuma(quadrangle 1:100,000 scale)

El Centro(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

USAF(Federal land areas administered by USAF)

Geographic areas

Country State County
United States Arizona Yuma

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 010S 018W 02 Arizona

Comments on the location information

  • LOCATED ON LUKE AIR FORCE BASE. NW 1/4 SECTION 2.

Commodities

Commodity Importance
Gold Primary
Silver Primary
Molybdenum Tertiary

Comments on the commodity information

  • MOLYBDENUM ANOMALY

Materials information

Materials Type of material
Gold Ore

Analytical data

Result $4 OR $5 OF GOLD PER TON

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss

Economic information

Geologic structures

Type of structure Local
Structure description Area Has Been Considerably Affected By Faulting

Ore body information

  • General form IRREGULAR MASSES
    Strike N56W
    Dip VERT
    Width 0.46M

Controls for ore emplacement

  • Vein Occupies A Nearly Vertical Fault Zone That Strike N56w

Comments on the geologic information

  • MINERALIZATION IN QUARTZ VEINS NEAR APLITIC DIKES ASSOCIATED WITH TWO-MICA GRANITE INTRUSIONS

Economic information about the deposit and operations

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

Mining district

District name La Posa District

Land status

Ownership category Federal

Production statistics

  • Year 1940
    Period 1897-1940
    Accuracy Estimate
    Description Cp_Grade: ^0.25 Oz Au/Ton, 0.1 Oz Ag/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Silver Silver 3g/mt
    Ore Gold Gold 7g/mt

Comments on the production information

  • SPORADIC OPERATIONS.

Workings at the site

  • Type of workings Underground
    Length 27.43M
    Overall depth 70.1M

Comments on the workings information

  • DEVELOPMENT INCLUDES THREE OLD SHAFTS AND TUNNELS

Comments on development

  • PREVIOUS OWNERS INCLUDE EATON RYAN & SWENSON, HINDMAN

Reference information

Bibliographic references

  • Deposit

    WALLABY ENTERPRISES, TUCSON, AZ, MINING DISTRICT DATA BASE FILE.

  • Deposit

    KEITH, S.B., 1978, INDEX OF MINING PROPERTIES IN YUMA COUNTY, ARIZONA: ARIZONA BUREAU OF MINES BULLETIN 192, P. 160.

  • Other Database

    CIMRI

  • Production

    KEITH, S.B., 1978

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1972 Gere, W. U.S. Geological Survey
Updater 01-NOV-1979 Hall, R. K. (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.