El Oso Mine

Past Producer in Gila county in Arizona, United States with commodities Tungsten, Molybdenum
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. Ownership information
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10027337
MRDS ID M002890
Record type Site
Current site name El Oso Mine
Alternate or previous names New Discovery, Harrison
Related records 10209986

Geographic coordinates

Geographic coordinates: -111.37765, 33.75368 (WGS84)
Relative position ON CREST OF MAZATZAL MOUNTAINS 6 MI W OF N END OF ROOSEVELT LAKE.

Site location context

Political divisions (FIPS codes)

Gila(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Boulder Mountain(quadrangle 1:24,000 scale)

Theodore Roosevelt Lake(quadrangle 1:100,000 scale)

Mesa(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Tonto(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
United States Arizona Maricopa

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 005N 010E 19 Arizona

Comments on the location information

  • CLAIMS EXTEND INTO MARICOPA CO.

Commodities

Commodity Importance
Tungsten Critical Primary
Molybdenum Tertiary

Comments on the commodity information

  • TUNGSTEN MINERALS NOT CONCENTRATED SUFFICIENTLY TO CONSTITUTE ORE EXCEPT IN A FEW PLACES

Materials information

Materials Type of material
Molybdenite Ore
Pyrite Ore
Scheelite Ore
Wolframite Ore
Fluorite Gangue
Quartz Gangue
Tourmaline Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Pegmatite
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

(1) -111.37765, 33.75368

Economic information

Geologic structures

Type of structure Local
Structure description Granite Cut By A Mile Wide Belt Of Granite Porphyry. Fissures Stri King N-S, N20-25e, N45e, N65w

Ore body information

  • General form LINEAR
    Strike N75W; S24W
    Dip N; W
    Length 9.14M
    Width 1.52M
  • General form LINEAR
    Strike N75W; S24W
    Dip N; W

Controls for ore emplacement

  • Steep Fissures Intruded By Aplite Or Pegmatite Dikes

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1941
Discoverer E.R., P.J., & H.G. Harrison And Bern Swensk

Mining district

District name Four Peaks District

Land status

Ownership category National Forest
Area name Tonto National Forest

Ownership information

  • Type Owner
    Owner Marvin Harrison
    Home office Of Fresno, Ca
    First year 1961

Comments on the production information

  • ONLY RECORDED PRODUCTION IS 24 UNITS OF WO3 IN 1953 & 1954. OTHER UNRECORDED PRODUCTION WAS LESS THAN A FEW TONS OF HAND SORTED ORE

Workings at the site

  • Type of workings Surface/Underground
    Length 121.92M
    Overall depth 3.05M

Comments on the workings information

  • 235 FT LONG ADIT WITH 200 FT OF CROSSCUTS. SEVERAL SHORT ADITS AN D SHALLOW SHAFTS, OPEN CUTS AND TRENCHES

Comments on development

  • 17 UNPATENTED CLAIMS

Reference information

Bibliographic references

  • Deposit

    WILSON, 1941, ABM BULL 148, P. 31.

  • Deposit

    DALE, 1961, USBM IC 8078.

  • Deposit

    ADMR FILE DATA.

  • Other Database

    CIMRI

  • Production

    DALE, 1961, P. 12

General comments

Subject category Comment text
Deposit 2 SETS OF VEINS; N PART N75W DIP N, 5 PART S24W DIP W. SOME VEINS HAVE BEEN TRACED FOR 2000 FT ALTHOUGH NOT ALL. MINERALIZED VEINS AS A WHOLE AVERAGE 6 IN. WIDE, WIDE SPOTS OR SHOOTS BEING 30 FT LONG, 5 FT WIDE
Deposit THIS REPORT REPRESENTS A MERGER OF ORIGINAL RECORD M002890 WITH RE CORD M030451 OF JAN WILT IN MOLYBDENUM FILE, CONTACT PERSON T.G. THEOR ORE, USGS ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1983 Peterson, Jocelyn A. U.S. Geological Survey

Beyond USGS

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

External references

Authoritative Arizona resources

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