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Invincible Prospect

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

Geologic information

Identification information

Deposit ID 10048341
MRDS ID M899928
Record type Site
Current site name Invincible Prospect
Alternate or previous names Blue Eagle and Exposed Reef Group
Related records 10259224

Geographic coordinates

Geographic coordinates: -110.75679, 31.50403 (WGS84)
Elevation 1280
Location accuracy 100(meters)
Relative position 2.5 MILES SOUTH OF PATAGONIA, BETWEEN FLUX AND ANDES MINE GROUPS, Used Abgmt Files, Stanton B. Keith; Schrader (1915)

Site location context

Political divisions (FIPS codes)

Santa Cruz(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Patagonia(quadrangle 1:24,000 scale)

Fort Huachuca(quadrangle 1:100,000 scale)

Nogales(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Santa Cruz(hydrologic unit)

Santa Cruz(hydrologic accounting unit)

Middle Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

Coronado 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 Santa Cruz

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 022S 016E 19 NW OF SW Arizona

Comments on the location information

  • LOCATED ON NORTH SIDE OF ALUM GULCH; BLUE EAGLE GROUP LOCATED TO SW AND EXPOSED REEF MINE LOCATED ABOUT 1.0 MILE TO SOUTH ; INFO FROM LAND.ST :(1979)

Commodities

Commodity Importance
Copper Primary
Gold Secondary

Materials information

Materials Type of material
Sulfur Gangue

Alteration

  • (Local) Surface Oxidation To Unknown Depths

Analytical data

Result EARLY 1900'S ASSAY VALUES AVERAGED 1-3% CU AND ABOUT $1/TON AU

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Mountain Wrightson Formation;Josephine Canyon Diorite
    Rock description Mountain Wrightson Formation;Josephine Canyon Diorite
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Trachyandesite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
  • Host or associated Host
    Rock type Plutonic Rock

Nearby scientific data

(1) -110.75679, 31.50403
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description General Structure Common To Regional Formations Is A Sheeting Which Dips 40 Nnw
Type of structure Local
Structure description Rhyolite Cut By Series Of Joints Dipping 25-30 Nnw, In Which There Is A Concentration Of Almost Pure Iron Sulfides In Veinlets Or Bands (Maximum Width 1.5 In)

Ore body information

  • General form IRREGULAR
    Width 6.1M
  • General form IRREGULAR

Controls for ore emplacement

  • Disseminated Cupriferous Pyrite And Minor Amounts Of Chalcopyrite In Massive Porphyritic Rhyolite Country Rock

Comments on the geologic information

  • WALL ROCK TESTED FOR MANUFACTURE OF SULFURIC ACID, CONCENTRATIONS AVERAGING 33% FE AND 35-36% S.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1875

Mining district

District name Harshaw District

Land status

Ownership category National Forest

Comments on the workings information

  • DEVELOPMENTS INCLUDED 60-FT LONG TUNNEL RUNNING N25E INTO BASE OF RED MOUNTAIN

Comments on development

  • OWNERS AND OPERATORS INCLUDED THE IVANHOE MINING CO., INVINCIBLE CLAIM IS ONE OF 22 UNPATENTED LODE CLAIMS COMPRISING THE BLUE EAGLE AND EXPOSED REEF GROUP

Reference information

Bibliographic references

  • Deposit

    USBM FILES, INVINCIBLE PROSPECT

  • Deposit

    ABGMT FILES, STANTON B. KEITH

  • Deposit

    SCHRADER, FRANK C., 1915, MINERAL DEPOSITS OF THE SANTA RITA AND PATAGONIA MOUNTAINS, ARIZONA; USGS BULLETIN 582, P. 257

  • Deposit

    ADMR FILE DATA, EXPOSED REEF AND BLUE EAGLE GROUPS

  • Deposit

    SIMONS, FRANK S. 1974, GEOLOGIC MAP AND SECTIONS OF THE NOGALES AND LOCHIEL QUADRANGLES, SANTA CRUZ COUNTY, ARIZONA; USGS MAP I-762 (1:48000)

General comments

Subject category Comment text
Deposit Discovery Year: LATE 1800'S
Deposit SEE ALSO: BLUE EAGLE MINE, EXPOSED REEF MINES ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-82 Calder, Susan R. Arizona Bureau of Geology and Mineral Technology

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.