Shannon Mine

Past Producer in Greenlee county in Arizona, United States with commodities Copper, Silver, Gold, Garnet, Iron, Zinc, Manganese
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. Ownership information
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10088880
MRDS ID M800161
Record type Site
Current site name Shannon Mine
Alternate or previous names Shannon Mtn. Mine

Geographic coordinates

Geographic coordinates: -109.36065, 33.11954 (WGS84)
Elevation 1715
Relative position SUMMIT AND SOUTHERN SLOPES OF SHANNON MOUNTAIN.

Site location context

Political divisions (FIPS codes)

Greenlee(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Clifton(quadrangle 1:24,000 scale)

Clifton(quadrangle 1:100,000 scale)

Clifton(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

San Francisco(hydrologic unit)

Upper Gila(hydrologic accounting unit)

Upper Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Geographic areas

Country State County
United States Arizona Greenlee

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 04S 029E 04 NE Arizona

Comments on the location information

  • RISES 1200 FT ABOVE EAST SIDE OF CHASE CREEK AT METCALF; CLAIMS ARE CONTIGUOUS AND COVER SOUTHERN SLOPES OF SHANNON MOUNTAIN. ; INFO FROM LAND.ST :(1973)

Commodities

Commodity Importance
Copper Primary
Silver Secondary
Gold Secondary
Garnet Tertiary
Iron Tertiary
Zinc Critical Tertiary
Manganese Critical Tertiary

Comments on the commodity information

  • NOT LISTED IN PRODUCTION STATISTICS: ZN, MN, FE.

Materials information

Materials Type of material
Brochantite Ore
Chalcocite Ore
Chalcopyrite Ore
Chrysocolla Ore
Cuprite Ore
Malachite Ore
Pyrite Ore
Asbestos Gangue
Calcite Gangue
Diopside Gangue
Epidote Gangue
Hematite Gangue
Kaolin Gangue
Limonite Gangue
Magnetite Gangue
Pyrolusite Gangue
Pyroxene Gangue
Quartz Gangue
Tremolite Gangue

Alteration

  • (Local) Some Of Largest Ore Bodies Were Originally Calcareous Sediments Altered Through Leaching And Oxidation, Vertical Extent Unknown

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Morenci Granite Porphyry
    Rock description Morenci Granite Porphyry
    Stratigraphic age (youngest) Tertiary
    Chronological age 55.2
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Modoc Limestone;Morenci Shale;;Longfellow Limestone
    Rock description Modoc Limestone;Morenci Shale;;Longfellow Limestone

Nearby scientific data

(1) -109.36065, 33.11954

Economic information

Geologic structures

Type of structure Regional
Structure description Ne Trending Porphyry Dikes, Prominent Fault On N Side Of Shannon Mountain
Type of structure Local
Structure description Extensive Fracturing Of Sediments Due To Porphyry Intrusions And Faulting

Ore body information

  • General form IRREGULAR
    Strike NE
    Dip 65 TO 70 NW
    Thickness 161.54M
    Length 335.28M
    Width 274.32M
    Depth to bottom 161.54M

Controls for ore emplacement

  • Ne Trending Granite Porphyry Dikes, Triangular Area Of Sedimentary Deposits

Comments on the geologic information

  • COPPER ORES FOUND IN GRANITE PORPHYRY AND SEDIMENTARY SERIES BUT RARELY IN GRANITE COUNTRY ROCK; LARGE ORE BODIES USUALLY SEPARATED INDEFINITELY AND IRREGULARLY FROM SURROUNDING ROCKS; REPLACEMENT OF LIMESTONE THROUGH METASOMATIC ACTIVITY MOST EVIDENT IN MODOC LIMESTONE WHERE LARGEST ORE BODY OCCURS. SOME OF THE LIMESTONE HAS BEEN PARTIALLY ALTERED.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Deposit size Small
Significant No
Discovery year 1875
Discoverer Charles M. Shannon, Baylor Shannon
Year of first production 1902
Year of last production 1918

Mining district

District name Copper Mountain District

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Phelps Dodge Corp., Morenci Branch
    First year 1952

Workings at the site

  • Type of workings Underground
    Area 15.54HA
    Length 2877.31M
    Overall depth 136.86M
    Overall length 518.16M
    Overall width 304.8M

Comments on the workings information

  • DIMENSIONS MEASURED ON UNDERGROUND WORKINGS MAP AND VERTICAL SECTION OF SHANNON MINE (LINDGREN 1905)

Comments on development

  • OPERATORS INCLUDED SHANNON COPPER CO, ARIZONA COPPER CO.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit COPPER ORES CHIEFLY OCCUR ON RIDGE BETWEEN CHASE CREEK AND KING GULCH, AND ON SHANNON MOUNTAIN ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Deposit Discovery Year: LATE 1800'S
Deposit DEPTH TO BOTTOM AND MAXIMUM THICKNESS GIVEN AS DIMENSIONS OF MODOC AND LONGFELLOW SEQUENCES IN WHICH ALL DEPOSITS ARE CONTAINED; MAXIMUM LENGTH ESTIMATED FROM SHANNON MINE VERTICAL SECTION (LINDGREN 1905) STRIKE AND DIP GIVEN FOR ONE OF FIVE ORE BODIES (BLACK HAWK ORE BODY); 34 CLAIMS TOTALLING 562 ACRES.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1981 Calder, Susan R. Arizona Bureau of Geology and Mineral Technology
Updater 01-DEC-1992 Orris, Greta J. 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.