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Brunswick Mine

Producer in Greenlee county in Arizona, United States with commodity Copper
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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. Production statistics
  19. Workings at the site
  20. Links to other databases
  21. Bibliographic references
  22. General comments
  23. Reporter information

Geologic information

Identification information

Deposit ID 10109001
MRDS ID M001699
Record type Site
Current site name Brunswick Mine
Alternate or previous names Stevens Lease, Stevens Group Mine

Geographic coordinates

Geographic coordinates: -109.36565, 33.13316 (WGS84)
Elevation 1494
Relative position 6 1/2 MILES NW OF CLIFTON.

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)

Geographic areas

Country State County
United States Arizona Greenlee

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 003S 029E 33,28 SE (28); NE (33) Arizona

Comments on the location information

  • LOCATED IN GARFIELD GULCH, 0.25 MILE ABOVE THE MOUTH. ; INFO FROM LAND.ST :(1973)

Commodities

Commodity Importance
Copper Primary

Comments on the commodity information

  • ABOVE THE LOWER TUNNEL, THE ORE CONSISTS OF ABOUT 25 % CHALCOCITE AND 75 % MALACHITE.

Materials information

Materials Type of material
Chalcocite Ore
Chalcopyrite Ore
Chrysocolla Ore
Cuprite Ore
Malachite Ore
Pyrite Ore

Alteration

  • (Local) Minor

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite > Diabase
    Rock unit name Precambrian Granite-Granodiorite Complex;Granite-Granodiorite Complex
    Rock description Precambrian Granite-Granodiorite Complex;Granite-Granodiorite Complex
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -109.36565, 33.13316
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Normal Faulting Confined To Pre-Tertiary Rocks, With Vertical Displacement Of 2000 Ft
Type of structure Local
Structure description Diabase Dike Intrudes Graite And Is Step-Faulted To East; Main Ore Deposits Are Confined To 20ne Of Crushed Granite Between Country Rock And Diabase Dike

Ore body information

  • General form IRREGULAR, PODS
    Strike N 05 E
    Dip 90
    Width 3.66M

Controls for ore emplacement

  • Vein Occurs Along Contact Between Granite And Diabase Dike.

Comments on the geologic information

  • THE DIABASE DIKE RARELY CONTAINS MUCH ORE. THE VEIN MATERIAL CONSISTS LARGELY OF CRUSHED AND ALTERED GRANITE. NEAR THE END OF THE TUNNEL THE VEIN APPEARS TO FORK, WITH SOME DIABASE OCCURRING ALONG EACH BRANCH.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1875
Discoverer Charles E. Stevens, Sr.; Isaac Stevens

Mining district

District name Copper Mountain District

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Harles E Stevens Jr
    First year 1957
    Last year 1970
  • Type Owner
    Owner Phelps Dodge Corp., Morenci Branch )
    First year 1921

Production statistics

  • Year 1905
    Period 1900 - 1905
    Material ORE-CU AVG
    Description Cp_Grade: ^30 % Cu
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Copper Copper 30wt-pct

Comments on the production information

  • USGS PROF PAPER 43 P. 353, ADDITIONAL PRODUCTION MIGHT BE INCLUDED UNDER STEVENS LEASE.

Workings at the site

  • Type of workings Underground
    Length 60.96M
    Overall depth 18.29M

Comments on the workings information

  • DEVELOPMENTS INCLUDED 2 TUNNELS A FEW HUNDRED FEET LONG, THE LOWER ONE LOCATED ALMOST IN THE BOTTOM OF GARFIELD GULCH; ONE WINZE 60 FT DEEP, EXPOSING GOOD CHALCOCITE ORE.

Comments on development

  • OWNERS INCLUDED SHANNON COPPER CO., ARIZONA COPPER CO., LTD; OPERATORS INCLUDED CHARLES E. STEVENS, JR., STEVENS COPPER MINING CO., JESUS GOMEZ, R.L. NARDELLI

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit 2 PATENTED CLAIMS (STELLA, LITTLE STELLA)
Deposit Discovery Year: LATE 1800'S

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1979 Johnson, Kris H. (Creasey, S.C.) U.S. Geological Survey
Updater 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.