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Pinafore Mine

Producer in Yavapai county in Arizona, United States with commodities Copper, Zinc, Lead, Silver, Gold
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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 10048171
MRDS ID M800224
Record type Site
Current site name Pinafore Mine
Alternate or previous names Eureka Mine

Geographic coordinates

Geographic coordinates: -113.27716, 34.49032 (WGS84)
Elevation 1000
Relative position 4.1 MILES SOUTH-SOUTHWEST OF "GRAYBACK 5113" ON NORTHERN PEAK OF GRAYBACK MTS.

Site location context

Political divisions (FIPS codes)

Yavapai(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Arrastra Mountain NE(quadrangle 1:24,000 scale)

Alamo Lake(quadrangle 1:100,000 scale)

Prescott(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Santa Maria(hydrologic unit)

Bill Williams(hydrologic accounting unit)

Lower Colorado(hydrologic subregion)

Lower Colorado(hydrologic region)

Geographic areas

Country State County
United States Arizona Yavapai

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 013N 010W 02 SE OF SW Arizona

Comments on the location information

  • UTM COORDINATES TO SHAFT. TWO ADITS ARE LOCATED JUST DOWNSLOPE AND NW OF THE SHAFT

Commodities

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

Materials information

Materials Type of material
Chalcocite Ore
Chalcopyrite Ore
Galena Ore
Sphalerite Ore
Calcite Gangue
Chlorite Gangue
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Chloritization, Pyritization

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Stratigraphic age (youngest) Proterozoic
    Chronological age 1770
    Dating method U-Pb (zircon)
    Type of media Zircon
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Stratigraphic age (youngest) Proterozoic
    Chronological age 1770
    Dating method U-Pb (zircon)
    Type of media Zircon
  • Host or associated Host
    Rock type Metamorphic Rock > Schist > Mica Schist
    Stratigraphic age (youngest) Proterozoic
    Chronological age 1770
    Dating method U-Pb (zircon)
    Type of media Zircon
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Stratigraphic age (youngest) Proterozoic
    Chronological age 1770
    Dating method U-Pb (zircon)
    Type of media Zircon
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Stratigraphic age (youngest) Proterozoic
    Chronological age 1770
    Dating method U-Pb (zircon)
    Type of media Zircon

Nearby scientific data

(1) -113.27716, 34.49032
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Foliation In Precambrian Metavolcanic Rocks Trends N 20 E To N 30 E
Type of structure Local
Structure description Massive Sulfide Lenses Parallel Foliation And Bedding

Ore body information

  • General form LENS
    Strike N 20 E
    Dip 70 E
    Thickness 3.05M
    Length 24.38M
    Width 45.72M
    Depth to bottom 45.72M

Controls for ore emplacement

  • Stratigraphy, Igneous Activity

Comments on the geologic information

  • DEPOSIT IS MASSIVE SULFIDE LENS IN PROTEROZOIC METAVOLCANIC ROCKS. DEPOSIT LOCALIZED AT OR NEAR CONTACT OF RHYOLITE AND ANDESITE, OR NEAR QUARTZ-MICA SCHIST

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1950
Discoverer John Lawler
Year of first production 1935
Year of last production 1957

Mining district

District name Old Dick District

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Hillside Mining (1950'S)
  • Type Owner
    Owner Hullinger And Mcfarland,
    First year 1956

Workings at the site

  • Type of workings Underground
    Area 0.046HA
    Length 182.88M
    Overall depth 45.72M
    Overall length 106.68M
    Overall width 4.57M

Comments on the workings information

  • ADIT 250 FT LONG. TWO LEVELS-70 FT AND 150 FT.

Comments on development

  • PATENTED CLAIMS INCLUDE EUREKA. EUREKA EXTENSION AND ALL SURROUNDING CLAIMS ARE UNPATENTED

Reference information

Bibliographic references

  • Deposit

    ABGMT CLIPPINGS FILES

  • Deposit

    USBM-ABGMT FILE DATA

  • Deposit

    USBM. FED. MINE MAP REPOSITORY REEL 4055-525

  • Deposit

    AZ DEPT. MIN. RESOURCES FILE DATA

General comments

Subject category Comment text
Deposit Discovery Year: 1900'S
Deposit OREBODY WAS CRESCENT-SHAPED AND PLUNGED STEEPLY

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1981 Dewitt, Ed H. 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.