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Detroit Mine

Past Producer in Greenlee county in Arizona, United States with commodities Copper, Silver, Zinc, Manganese
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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. 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 10048296
MRDS ID M800428
Record type Site
Current site name Detroit Mine
Alternate or previous names Part of Arizona Copper Co Group

Geographic coordinates

Geographic coordinates: -109.36537, 33.07677 (WGS84)
Elevation 1494
Location accuracy 100(meters)
Relative position UNDER PRESENT TOWN OF MORENCI., Used Blm District Sheets 840 And 841; Usgs Professional Paper 43(1905)

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 004S 029E 16,21 S2 OF SE (16); N2 OF NE (21) Arizona

Comments on the location information

  • LOCATED TO EAST OF MANGANESE BLUE MINE AND TO SOUTH OF COPPER MOUNTAIN MINE. ; INFO FROM LAND.ST :(1973)

Commodities

Commodity Importance
Copper Primary
Silver Secondary
Zinc Critical Tertiary
Manganese Critical Tertiary

Comments on the commodity information

  • ORE CHIEFLY CONTAINS MALACHITE AND AZURITE; CHALCOCITE AND CUPRITE ARE RARE

Materials information

Materials Type of material
Chalcocite Ore
Chalcopyrite Ore
Cuprite Ore
Malachite Ore
Pyrite Ore
Sphalerite Ore
Epidote Gangue
Garnet Gangue
Hematite Gangue
Kaolin Gangue
Limonite Gangue

Alteration

  • (Local) Upper Beds Of Modoc Limestone Altered To Garnet Rock; Ore Is Entirely Oxidized

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) Pliocene
    Stratigraphic age (youngest) Tertiary
    Chronological age 55.5
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
    Rock unit name Modoc Limestone;Morenci Shale
    Rock description Modoc Limestone;Morenci Shale
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -109.36537, 33.07677
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description One Of Several Regional Deposits Of Carbonates And Cuprite In Limestone; East Side Of The Copper Mountain Fault
Type of structure Local
Structure description Main Ore Body Is Located Immediately Under Heavy Garnet Rock And Is About 25 Ft Thick; A Lower Ore Body Of 5 Ft Thickness Is Separated From Main Ore Body By A Barren Lime-Shale Sequence

Ore body information

  • General form TABULAR
    Strike NW
    Dip 10SW
    Thickness 12.19M
    Length 121.92M
    Depth to top 22.86M
    Depth to bottom 121.92M
  • General form TABULAR
    Dip 10SW

Controls for ore emplacement

  • Several Ore-Bearing Horizons Are Contained In Limestone And Separated By Barren Material Main Ore Body Contained Between 2 Large Porphyry Dikes ( Joy And Hummingbird Dikes) That Both Dip 60 To 70 Nw

Comments on the geologic information

  • MINE LOCATED JUST SOUTH OF THE MAIN PORPHYRY CONTACT AT MORENCI. GARNET IN THE EXPOSED MODOC LIMESTONE FORMATION FORMS A CAP ROCK OF 75 TO 100 FT THICKNESS. PORPHYRY DIKES GENERALLY DO NOT CONTAIN ORE BUT ARE OCCASIONALLY CUT BY VERTICAL SEAMS OF PYRITE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1884
Year of first production 1884
Year of last production 1932

Mining district

District name Copper Mountain District

Land status

Ownership category Private

Ownership information

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

Comments on the production information

  • PRODUCTION DATA INCLUDED IN LONGFELLOW METCALF MINE; LONGFELLOW METCALF ALSO INCLUDES THE MAMMOTH, YAVAPAI, LONGFELLOW, METCALF, CORONADO, JOY, AND HUMBOLDT MINES OF THE ARIZONA COPPER CO LTD. ORE REPORTED TO BE NEARLY EXHAUSTED IN 1905; TOTAL PRODUCTION ESTIMATED AT 150,000 TONS (SEE USGS PROFESSIONAL PAPER 43 (1905)

Workings at the site

  • Type of workings Surface/Underground
    Area 1.051HA
    Overall depth 121.92M
    Overall length 121.92M
    Overall width 91.44M

Comments on the workings information

  • DEVELOPMENTS INCLUDED THE 224 FT DEEP DETROIT SHAFT WITH 4 LEVELS; CONNECTIONS TO THE JOY SHAFT. SEVERAL ADITS CONNECTED BY A MAZE OF IRREGULAR STOPES AND WORKINGS; 400 FT DEEP SOUTH SHAFT NEAR THE COPPER MOUNTAIN FAULT.

Comments on development

  • OWNERS INCLUDED ARIZONA COPPER CO LTD.; THE DETROIT AND LONGFELLOW MINES WERE THE LARGEST PRODUCERS FOR THE ARIZONA COPPER CO LTD; DETROIT MINE SHOULD NOT BE CONFUSED WITH THE DETROIT COPPER CO MINES AT MORENCI

Reference information

Bibliographic references

  • Deposit

    ABGMT-USBM FILE DATA.

  • Deposit

    ABGMT CLIPPINGS FILE, ARIZONA COPPER CO LTD.

  • Deposit

    USGS PP 43, P. 240-245.

  • Deposit

    BLM DISTRICT SHEETS 840 AND 841.

  • Deposit

    BENNETT, K.C., 1975, GEOLOGY AND ORIGIN OF THE BRECCIAS IN THE MORENCI-METCALF DISTRICT, GREENLEE COUNTY, ARIZONA: M.S. THESIS, UNIVERSITY OF ARIZONA, 153 P.

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit SEE ALSO: MANGANESE BLUE MINE, COPPER MOUNTAIN MINE FOR GEOLOGICAL INFORMATION. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-81 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.