Old Eagle Mine

Past Producer in Pinal county in Arizona, United States with commodities Silver, Gold, Lead
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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10039942
MRDS ID M051147
Record type Site
Current site name Old Eagle Mine
Related records 10186718

Geographic coordinates

Geographic coordinates: -111.07902, 32.59177 (WGS84)

Site location context

Political divisions (FIPS codes)

Pinal(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Tortolita Mountains(quadrangle 1:24,000 scale)

Casa Grande(quadrangle 1:100,000 scale)

Tucson(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Santa Cruz(hydrologic unit)

Santa Cruz(hydrologic accounting unit)

Middle Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

ST(Federal land areas administered by ST)

Geographic areas

Country State County
United States Arizona Pinal

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 010S 012E 02 Arizona

Comments on the location information

  • INFO FROM LAND.ST :(1964)

Commodities

Commodity Importance
Silver Primary
Gold Primary
Lead Primary

Materials information

Materials Type of material
Argentite Ore
Cerussite Ore
Galena Ore
Chlorite Gangue
Hematite Gangue
Magnetite Gangue
Quartz Gangue

Alteration

  • (Local) Ser

Analytical data

Result ASSAY OF DRILL CORE SOUTH OF THE VEIN YIELDED .06 AG THE AVERAGE FOR THE VEIN IS .5 OZ AU AND 1 TO 4 OZ AG. HIGH GRADE ASSAYS OF 15.8 OZ AU AND 104 OZ AG WERE DOCUMENTED BY MR. EWING. BULK ASSAYS OF DUMPS FROM THE OLD WORKINGS GAVE .1 TO 1.8 OZ AU, .1 TO 12.7 OZ AG, AND TRACE TO 3.5% LEAD. GREATER THAN 90% RECOVERY WITH CYANIDE AND RESIN. XRAY OF DARK ORE GAVE CERRUSITE, GALENA, AND ARGENTITE PEAKS.

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite > Diabase
    Rock unit name Oracle Quartz Monzonite
    Rock description Oracle Quartz Monzonite

Nearby scientific data

(1) -111.07902, 32.59177

Economic information

Ore body information

  • General form TABULAR
    Strike N 80 E
    Dip 70 - 90 S
    Thickness 1.2M
    Length 154M

Controls for ore emplacement

  • Mineralization Is Coincident With Contact

Comments on the geologic information

  • DIABASE FORMS FOOTWALL, QUARTZ MONZONITE FORMS THE HANGING WALL.

Economic information about the deposit and operations

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

Mining district

District name Owl Head District

Land status

Ownership category Private

Comments on the workings information

  • OLD WORKINGS INCLUDE 3 SHAFTS 7.7 M TO 23.0 M, WITH UNKNOWN AMOUNTS OF DRIFTING. NEW SHAFT IS 12.4 M DEEP.

Comments on development

  • NOW (9-76) BEING ACTIVELY MINED FOR SILVER-GOLD ORE, FROM THE NEW SHAFT. CLAIM IS STAKE LEASE 3707.

Reference information

Bibliographic references

  • Deposit

    INFO FROM WILLIAM EWING, PRESIDENT OF THE ARIZONA WESTERN MINING CO

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit THE FOLLOWING INFORMATION WAS PROVIDED BY WILLIAM EWING PRESIDENT OF ARIZONA WESTERN MINING CO. ARIZONA WESTERN IS ACTIVELY MINING SILVER - GOLD ORE FROM THE NEW SHAFT. THE CLAIM IS STAKE LEASE 3707 . ASSAYS OF DRILL CORE SOUTH OF THE VEIN YIELDED 0.06 SILVER. THE AVERAGE FOR THE VEIN IS 0.5 OZ GOLD & 1 - 4 OZ. SILVER; HIGH GRADE ASSAYS OF 15.8 OZ. GOLD AND 104 OZ SILVER WERE DOCUMENTED BY MR. EWING. BULK ASSAYS OF DUMPS FROM THE OLD WORKINGS GAVE 0.1 - 1.8 OZ GOLD, 0.1 - 12.7 OZ SILVER, AND TR - 3.5 % LEAD. DARK QUARTZ GIVES THE BEST ASSAYS, REPORTEDLY AS TELLURIDES. WHIFFLE TABLE NOT EFFICIENT IN RECOVERY BUT MR EWING REPORTS GREATER THAN 90% RECOVERY WITH CYANIDE AND RESIN. XRAY OF DARK ORE GAVE CERRUSITE, GALENA, AND ARGENTITE PEAKS. ; INFO.SRC : 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-1976 Briskey, Joseph A. U.S. Geological Survey

Beyond USGS

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

Authoritative Arizona resources

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