Senator Morgan Mine

Past Producer in Pima county in Arizona, United States with commodities Copper, Silver, Tungsten, Zinc, Gold, Lead, Molybdenum
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. Production statistics
  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 10039591
MRDS ID M050383
Record type Site
Current site name Senator Morgan Mine
Related records 10113317

Geographic coordinates

Geographic coordinates: -111.07625, 31.88679 (WGS84)
Elevation 1097
Relative position 1.5 MI SW OF TWIN BUTTES

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Twin Buttes(quadrangle 1:24,000 scale)

Sells(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)

Geographic areas

Country State County
United States Arizona Pima

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 018S 012E 01,02 SW4 (01); SE4 (02) Arizona

Commodities

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

Materials information

Materials Type of material
Powellite Ore
Pyrite Ore
Scheelite Ore
Chlorite Gangue
Diopside Gangue
Garnet Gangue
Hedenbergite Gangue
Quartz Gangue
Tremolite Gangue

Alteration

  • (Local) Garnetized, Very Little Oxidized

Analytical data

Result 2 OZ/T AG REPORTED
Result ORE 0.805% WO3 PRODUCED FLOATATION CONCENTRATE S ASSAYING 62.08% WO3 WITH A RECOVERY OF 92.5%

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite

Nearby scientific data

(1) -111.07625, 31.88679

Economic information

Geologic structures

Type of structure Local
Structure description Shearing Parallel To And In Veins, Nw Faulting With Some Ne Faulti Ng

Ore body information

  • General form SHORT LENSES
    Length 365.76M
    Width 3.05M
    Depth to top 0M
    Depth to bottom 274.32M

Controls for ore emplacement

  • Localized By Intersecting Fault Zones, Along Nw Fracture Zone, Favo Rable Limestone Beds

Comments on the geologic information

  • NE FRACTURE ZONE SPARSELY MINERALIZED

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1875
Year of first production 1903
Year of last production 1918

Mining district

District name Pima District

Ownership information

  • Type Owner
    Owner Baxter
    Home office Twin Buttes

Production statistics

  • Year 1913
    Period 1906-1913
    Material CU
    Accuracy Accurate
    Description Cp_Grade: ^2 Oz/T Ag
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Silver Silver 56g/mt
  • Year 1918
    Period 1890-1918
    Material CU ORE
    Accuracy Estimate
    Description Cp_Grade: ^4% Cu, 9 Oz/T Ag, Minor Zn, Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Silver Silver 254g/mt
    Major Ore Copper Copper 4wt-pct
  • Year 1943
    Period 1942-1943
    Material W ORE
    Accuracy Estimate
    Description Cp_Grade: ^1.25% Wo3
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Wo3 Ore Tungsten Tungsten 1wt-pct

Comments on the production information

  • SCHEELITE WAS MINED FROM A 40-FT SHAFT 175 FT SW OF MORGAN SHAFT.

Workings at the site

  • Type of workings Surface/Underground
    Overall depth 274.32M

Comments on the workings information

  • DEEP SHAFT FOR COPPER PRODUCTION. SEVERAL TRENCHES AND PROSPECT P ITS FOR TUNGSTEN. NO WORK ON W OR CU SINCE 1943

Comments on development

  • OPERATORS INCLUDED TWIN BUTTES MINING AND SMELTING CO, J.A. POIND EXTER

Reference information

Bibliographic references

  • Deposit

    BROWN, 1926, MS THESIS, UNIV OF AZ

  • Deposit

    DALE, ET AL, 1960, USBM RI 5650

  • Deposit

    KEITH, 1974, ABM BULL 189, P. 138

  • Deposit

    WHITCOMB, 1948, MS THESIS, UNIV OF AZ

  • Deposit

    MANUGA, 1942, PHD THESIS, UNIV OF AZ

  • Deposit

    LEMMON, S. AND TWETO, O.L., 1962, USGS MAP MR-25.

  • Other Database

    CIMRI

  • Production

    DALE, 1960; KEITH, 1974

General comments

Subject category Comment text
Deposit COPPER MINERALIZATION OCCURS ALONG FRACTURE ZONE, AND EXTENDS DOW N TO 900 FT WHERE MINABLE GRADE ORE RUNS OUT OR GRANITE IS ENCOUNTERED . W ORE OCCURS IN WNW STRIKING QUARTZ FISSURE VEINS THAT EXTEND UP TO 50 FT LONG AND 10 FT WIDE. THESE VEINS OCCUR IN CRET (?) QUARTZITE AND SHALES FOR 600 FT.
Deposit THIS REPORT REPRESENTS A MERGER OF ORIGINAL RECORD M050383 WITH RECORD M030539 OF JAN WILT AND RECORD D000819 OF JAMES ELLIOT IN MOLYBDENUM FILE, CONTACT PERSON T.G. THEODORE, USGS ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Deposit Discovery Year: 1875 OR 1876

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1983 Peterson, Jocelyn A. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

Authoritative Arizona resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.