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Las Trajas Mine

Producer in Greenlee county in Arizona, United States with commodities Copper, Gold, Silver
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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. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. Reporter information

Geologic information

Identification information

Deposit ID 10048282
MRDS ID M800407
Record type Site
Current site name Las Trajas Mine
Alternate or previous names Arizona Copper Co Property
Related records 10186724

Geographic coordinates

Geographic coordinates: -109.39509, 33.10066 (WGS84)
Elevation 1859
Relative position 2.0 MILES NW OF MORENCI OPEN PIT; 2.75 MILES SW OF METCALF

Site location context

Political divisions (FIPS codes)

Greenlee(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Copperplate Gulch(quadrangle 1:24,000 scale)

Clifton(quadrangle 1:100,000 scale)

Clifton(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Gila-San Carlos Reservoir(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 07 SE OF NE Arizona

Comments on the location information

  • LOCATED AT HEAD OF PINKARO GULCH; ON PROMINENT RIDGE TO EAST OF THE HEAD OF COPPERPLATE GULCH ; INFO FROM LAND.ST :(1973)

Commodities

Commodity Importance
Copper Primary
Gold Secondary
Silver Secondary

Materials information

Materials Type of material
Chrysocolla Ore
Malachite Ore
Limonite Gangue

Alteration

  • (Local) Surface Oxidation; Majority Of Fissure Veins In This Region Contain Oxidized Copper Ores In Their Upper Levels

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Coronado Quartzite
    Rock description Coronado Quartzite
    Stratigraphic age (youngest) Late Cambrian
    Stratigraphic age (youngest) Late Cambrian
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite

Nearby scientific data

(1) -109.39509, 33.10066
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description South Side Of Prominent Quartz Itic Ridge North Of Morenci; Ridge Forms Divide Between Chase Creek And Eagle Creek Watersheds; Block Faulting South Of The Great Coronado Fissure Vein With Downthrow Of 1200 Ft On Southern Side And Gentle Westward Dip
Type of structure Local
Structure description Vein Is Located On A Subrodinate Fault Fissure

Ore body information

  • General form TABULAR

Controls for ore emplacement

  • South Side Of Prominent Quartzitic Ridge North Of Morenci; Ridge Forms Divide Between Chase Creek And Eagle Creek Watersheds; Block Faulting South Of The Great Coronado Fissure Vein With Downthrow Of 1200 Ft On Southern Side And Gentle Westward Dip

Comments on the geologic information

  • VEIN IS ACCOMPANIED EAST OF THE SHAFT BY A PORPHYRY DIKE THAT REACHES WIDTHS OF 200 FT AND DOES NOT SEEM TO FOLLOW THE FAULT FISSURE

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Copper Mountain District

Land status

Ownership category Private

Workings at the site

  • Type of workings Surface/Underground
    Overall depth 30.48M

Comments on the workings information

  • DEVELOPMENTS INCLUDED ONE SHAFT 100 FT DEEP AND SEVERAL SURFACE CUTS; ORES HAVE BEEN STOPED ALONG SURFACE CUTS TO A WIDTH OF 3 FT

Comments on development

  • OWNERS INCLUED ARIZONA COPPER CO LTD

Reference information

Bibliographic references

  • Deposit

    ABGMT-USBM FILE DATA

  • Deposit

    USBM FILES, LAS TRAJAS MINE

  • Deposit

    USGS PP 43, P. 345

  • 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.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1981 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.