North San Francisco River Placers

Producer in Greenlee county in Arizona, United States with commodity Gold
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. Links to other databases
  19. Bibliographic references
  20. Reporter information

Geologic information

Identification information

Deposit ID 10108994
MRDS ID M001287
Record type Site
Current site name North San Francisco River Placers
Alternate or previous names Evans Point Fold Placers, Polaris Group Property, Bokares Placer Mine
Related records 10209972

Geographic coordinates

Geographic coordinates: -109.28537, 33.10649 (WGS84)
Elevation 1097
Relative position AT CLIFTON TO 6 MILES N (DORSEY GULCH)

Site location context

Political divisions (FIPS codes)

Greenlee(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Clifton(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 004S;004S 030E;030E 05,06,07,18,19,30 Arizona

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Sulfur Gangue

Alteration

  • (Local) Surface Oxidation Of Gold-Bearing Veins Ne Of Copper King Mountain

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Gravel
    Rock unit name Longfellow Limestone
    Rock description Longfellow Limestone
    Stratigraphic age (youngest) Late Ordovician
    Stratigraphic age (youngest) Paleocene
    Stratigraphic age (youngest) Holocene

Nearby scientific data

(1) -109.28537, 33.10649

Economic information

Geologic structures

Type of structure Regional
Structure description Fine Flakes Of Gold Recovered From Well-Graded Stream Gravels And From Coarse, Roughly Bedded Gila Conglomerate Inthe Hills Around Morenci And On The Se Slopes Of Copper King Mountain
Type of structure Local
Structure description Gold Recovered From Quat River Gravels 50-60 Ft Above The Level Of The Present River Bed

Ore body information

  • General form STREAKS

Controls for ore emplacement

  • At Or Near Bedrock On Benches Above The Riverbed.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1875
Discoverer Bokares Claim: George Bokares (1938)

Mining district

District name Copper Mountain District

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Amax Inc.
    First year 1981

Reference information

Bibliographic references

  • Deposit

    JOHNSON, M.G., 1972 , PLACER GOLD DEPOSITS OF ARIZONA: U.S.G.S. BULLETIN 1355 , P. 17

  • Deposit

    ABGMT CLIPPINGS FILE; BOKARES MINE, POLARIS MINING AND MILLING CO, COLORADO MINE

  • Deposit

    USGS PROF PAPER 43, 1905, P. 211-212,77,78

  • Deposit

    USBM FILES; AMAX INC., EVANS POINT LIME QUARRY

  • Deposit

    ARIZ DEPT OF MINERAL RESOURCES FILE DATA, POLARIS GROUP AND PARROT GROUP: SEE EVANS POINT GOLD PLACERS

  • Deposit

    MINING REPORTER, V. 53, N. 16, (APRIL 19, 1906), REVIVAL OF GOLD MINING IN CLIFTON-MORENCI, ARIZONA, DISTRICT

  • Deposit

    BENNETT, 1975, GEOLOGY AND ORIGIN OF THE BRECCIAS IN THE MORENCI-METCALF DISTRICT, GREENLEE COUNTY, ARIZONA: M.S. THESIS UNIVERSITY OF ARIZONA, 153 P.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1979 Johnson, Kris H. (Creasey, S.C.) U.S. Geological Survey
Updater 01-JAN-1982 Calder, Susan R. U.S. Geological Survey

Beyond USGS

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

Operator history (post-MRDS)

MRDS records operators as of each record's last update (≤ 2019). Some of the operators listed here have since changed hands or dissolved:

Curated by qvyshift.com from publicly-reported M&A activity (SEC filings, press releases, USGS Mineral Yearbooks). Not authoritative — verify against primary sources before relying on it. The MSHA panel above is the current authoritative source for actively-permitted mines.

Authoritative Arizona resources

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