1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

North Star Mine

Past Producer in Pinal county in Arizona, United States with commodities Copper, Silica, Silver, Gold
Map
XML
JSON
KML
B
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 10046294
MRDS ID M241192
Record type Site
Current site name North Star Mine
Alternate or previous names Lula, Randall Copper Properties, Cora
Related records 10113454, 10259106

Geographic coordinates

Geographic coordinates: -111.3432, 32.82538 (WGS84)
Elevation 610
Relative position 1 1/2 MILES WEST OF TREADWAY MOUNTAIN (2305 FT), GRANITE HILLS.

Site location context

Political divisions (FIPS codes)

Pinal(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Picacho Reservoir SE(quadrangle 1:24,000 scale)

Casa Grande(quadrangle 1:100,000 scale)

Tucson(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle Gila(hydrologic unit)

Middle Gila(hydrologic accounting unit)

Middle Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management AZ)

Bureau of Land Management AZ BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Arizona Pinal

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 007S 010E 08 NW OF SW Arizona

Comments on the location information

  • MAIN SHAFT USED, BUT WORKINGS AND CLAIMS EXTEND NORTH AND EAST INTO THE EAST EDGE OF SECTION 7 AND E SECTION 6 ; INFO FROM LAND.ST :(1979)

Commodities

Commodity Importance
Copper Primary
Silica Primary
Silver Secondary
Gold Secondary

Comments on the commodity information

  • CHRYSOCOLLA BY FAR MOST COMMON MINERAL

Materials information

Materials Type of material
Chalcocite Ore
Chalcopyrite Ore
Chrysocolla Ore
Malachite Ore
Tenorite Ore
Chlorite Gangue
Quartz Gangue

Alteration

  • (Local) Supergene Hematite After Pyrite, Probable Supergene Chrysocolla

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Monzonite
    Stratigraphic age (youngest) Paleocene
  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Hornblendite
    Rock unit name Oracle Granite;North Star Monzonite (Johnson, 1981)
    Rock description Oracle Granite;North Star Monzonite (Johnson, 1981)
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Dacite
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Monzonite
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -111.3432, 32.82538
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Nw Trending Fault Forms Valley S Of Mine, Other Adits Also Along This Fault Zone

Ore body information

  • Strike N 40-60W
    Dip 30-40SW
    Length 2M
    Width 0.5M

Controls for ore emplacement

  • Dikes And Faults Control Vein Locations, Ore Fills Joints And Fractures

Comments on the geologic information

  • CONTACT BETWEEN YOUNGER GRANODIORITE AND PREC GRANODIORITE IS UNCLEAR

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1949
Year of last production 1970

Mining district

District name North Star District

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Owner
    Owner Randall, Frank
    First year 1972

Workings at the site

  • Type of workings Unknown
    Overall depth 103.63M

Comments on the workings information

  • UNDERGROUND WORKINGS FOR COPPER, OPEN PITS AND CUTS FOR SILICA (1962) DEEPEST SHAFT 340 FT, BUT IN 1962, 45 FT WAS DEEPEST BEING WORKED.

Comments on development

  • OPERATORS INCLUDED GUZMAN AND SCHWARTZ, 1962, DIETZ AND STONE, G.W. MINCLAY, D. DANIELS, AND EARNEST RAND ON CORA CLAIMS, 1956. 82 UNPATENTED CLAIMS, NORTH STAR AND CORA GROUPS. RECENT DRILLING 200+ FT BY A MAJOR COMPANY, 1976 REPORT

Reference information

Bibliographic references

  • Deposit

    ABGMT-USBM FILE DATA

  • Deposit

    ADMR NORTH STAR FILE

  • Deposit

    USGS MF-778, 1978

  • Deposit

    JOHNSON, GARY S., 1981 THE GEOLOGY AND GEOCHRONOLGY OF THE NORTHERN PICACHO MOUNTAINS, PINAL COUNTY, ARIZONA. UNIV. OF ARIZONA M.S. THESIS.

  • Deposit

    PHILLIPS, K.A., 1987, ARIZONA INDUSTRIAL MINERALS: ARIZONA DEPARTMENT OF MINES AND MINERAL RESOURCES MINERAL REPORT 4, 185 P.

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit DIMENSIONS GIVEN ARE FOR INDIVIDUAL VEINS

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1982 Gest, Don E. Arizona Bureau of Geology and Mineral Technology
Updater 01-OCT-1993 Orris, Greta J. U.S. Geological Survey

Beyond USGS

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

External references

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.