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Twig Mine

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

Geologic information

Identification information

Deposit ID 10048132
MRDS ID M800164
Record type Site
Current site name Twig Mine
Alternate or previous names Hogan Twigg Claim
Related records 10282677

Geographic coordinates

Geographic coordinates: -109.36454, 33.21177 (WGS84)
Elevation 1975
Location accuracy 100(meters)
Relative position 2 MILES SOUTH OF MITCHELL PEAK AND 1 MILE EAST OF SARDINE SADDLE., Used Agbmt-Usbm File Data

Site location context

Political divisions (FIPS codes)

Greenlee(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mitchell Peak(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)

Federal lands

Apache-Sitgreaves National Forests(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Arizona Greenlee

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 002S 029E 33 E2 OF SE Arizona

Comments on the location information

  • INFO FROM LAND.ST :01; 41? (1973)

Commodities

Commodity Importance
Gold Primary
Lead Primary
Silver Secondary
Copper Secondary
Zinc Critical Tertiary

Materials information

Materials Type of material
Anglesite Ore
Galena Ore
Vanadinite Ore
Wulfenite Ore
Calcite Gangue
Magnetite Gangue
Pyromorphite Gangue

Alteration

  • (Local) Contact Alterration Of Precambrian Sediments To Metaquartzite Schist Host Rock

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Rock unit name Andesite And Rhyolite Volcanics
    Rock description Andesite And Rhyolite Volcanics
    Stratigraphic age (youngest) Paleocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Metamorphic Rock > Schist
    Rock unit name Longfellow Limestone;Coronado Quartzite;Pinal Schist
    Rock description Longfellow Limestone;Coronado Quartzite;Pinal Schist

Nearby scientific data

(1) -109.36454, 33.21177
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Ne Trending Fault
Type of structure Local
Structure description Block Faulting With 500-600 Ft Downthrow On West Side Of Twig Mine Deposits

Ore body information

  • General form IRREGULAR
    Strike N5E
    Dip 70 W
    Thickness 182.88M
    Width 18.29M
    Depth to bottom 152.4M

Controls for ore emplacement

  • Rhyolite Tuff Breccia Zone Associated With Major Regional Fault Trending Ne

Comments on the geologic information

  • PINAL SCHIST IS HEAVILY SHATTERED AND FOLDED; REGIONAL EXPOSURE OF PRECAMBRIAN SCHIST DUE TO EROSION OF TERTIARY VOLCANICS; BALLS OF GALENA WEIGH UP TO 500 LB.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discoverer Roy Hagen
Year of first production 1915
Year of last production 1948

Mining district

District name Copper Mountain District

Ownership information

  • Type Owner
    Owner Hogan, J. A.
    First year 1948

Workings at the site

  • Type of workings Surface/Underground
    Length 36.58M
    Overall depth 38.1M

Comments on the workings information

  • OPEN CUTS ARE 75 FT IN DIAMETER WITH 20 FT MAXIMUM DEPTH; ONE SHAFT WITH DEPTH OF 65 FT; ONE TUNNEL IS 125 FT BELOW SURFACE AND IS 120 FT LONG.

Comments on development

  • OPERATORS INCLUDED J.A. HOGAN, LEWIS A. SMITH, EDWARD FITZGERALD, BRYCE WILLIS; NO PRODUCTION RECORDS FROM 1927 TO 1947

Reference information

Bibliographic references

  • Deposit

    ABGMT-USBM FILE DATA.

  • Deposit

    MOOLICK, R.T., AND DUREK, J.J., 1966, THE MORENCI DISTRICT, IN GEOLOGY OF THE PORPHYRY COPPER DEPOSITS, EDITED BY TITLEY AND HICKS.

  • Deposit

    USGS PROFESSIONAL PAPER 43 (1905).

  • Deposit

    ARIZONA DEPARTMENT OF MINERAL RESOURCES FILE DATA.

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit 3 PATENTED CLAIMS LISTED AS TWIG I, TWIG II, TWIG III

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-81 Calder, Susan R. U.S. Geological Survey
Updater 22-MAY-95 Orris, Greta J. U.S. Geological Survey

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.