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Mac Ridge Deposit

Producer in Elko county in Nevada, United States with commodity 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. Mineral occurrence model information
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Land status
  13. Ownership information
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10106937
MRDS ID M242936
Record type Site
Current site name Mac Ridge Deposit
Alternate or previous names Big Springs, Mesona Claims, Jack Creek Project, Bull Run
Related records 10310525

Geographic coordinates

Geographic coordinates: -115.95649, 41.54962 (WGS84)
Elevation 2850

Site location context

Political divisions (FIPS codes)

Elko(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

McAfee Peak(quadrangle 1:24,000 scale)

Jarbidge Mountains(quadrangle 1:100,000 scale)

Wells(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

North Fork Humboldt(hydrologic unit)

Humboldt(hydrologic accounting unit)

Black Rock Desert-Humboldt(hydrologic subregion)

Great Basin(hydrologic region)

Federal lands

Humboldt-Toiyabe National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Nevada Elko

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 042N 053E 12 Nevada

Comments on the location information

  • IN NORTH PART OF INDEPENDENCE MTS. ; INFO FROM LAND.ST :(1972); PREVIOUS QUAD DESIGNATION = WELLS (1970) 1:250000

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore

Mineral occurrence model information

Model code 172
USGS model code 26a
Deposit model name Carbonate-hosted Au-Ag
Mark3 model number 15

Economic information

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Independence Mountains

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner Freeport
  • Type Owner
    Owner Freeport Gold Co./Bull Run Gold Mines, Ltd.

Workings at the site

  • Type of workings Surface
    Area 3.238HA
    Overall width 152.4M

Comments on the workings information

  • DRILLING, OPEN PITS, HEAP-LEACHING FACILITY. THE MAC RIDGE PIT IS PLANNED TO BE 500 FT. IN DIAMETER.

Comments on development

  • EXTENSIVE DRILLING BY FREEPORT, MAPPING, SAMPLING, CONSTRUCTION OF ACCESS ROADS (BY 1982) PLACED IN PRODUCTION SEPT, 1987; FULLY OPERATIONAL OCT, 1987 WITH INITIAL PRODUCTION FROM HEAP-LEACHING, BUT SECOND PHASE CONSTRUCTION WILL PROVIDE FLUID-BED ROASTING SYSTEM AND CONVENTIONAL ORE-MILLING FACILITIES. ON COMPLETION, FREEPORT PLANS TO PROCESS 400,000 TONS/YEAR FROM THE THREE DEPOSITS AT BIG SPRINGS TO PRODUCE ABOUT 60,000 OZ/YEAR GOLD.

Reference information

Bibliographic references

  • Deposit

    NBMG MI-1986, THE NEVADA MINERAL INDUSTRY, 1986.

  • Deposit

    BONHAM, H.F., 1986, NBMG MAP 91.

  • Deposit

    PROSPECTUS - FREEPORT GOLD, CO. 1985.

  • Deposit

    1983 ANNUAL REPORT TO STOCKHOLDERS OF BULL RUN GOLD MINES, LTD.

  • Deposit

    NBMG, 1988, MI-1987.

  • Deposit

    NUMEROUS PRESS RELEASES, NBMG MINING DISTRICT FILE 79-A.

  • Deposit

    EIS REPORT - BIG SPRINGS PROJECT, ON FILE AT NBMG

  • Deposit

    USDA FOREST SERVICE, 1987, ENVIRONMENTAL ASSESSMENT - BIG SPRINGS PROJECT, ELKO COUNTY, NEVADA.

  • Deposit

    LAPOINTE, D. D., TINGLEY, J. V., JONES, R. B., 1991, MINERAL RESOURCES OF ELKO COUNTY, NEVADA, NBMG BULLETIN 106.

General comments

Subject category Comment text
Deposit MAC RIDGE IS ONE OF THREE DEPOSITS WHICH COMPRISE THE BIG SPRINGS MINE DEVELOPED BY FREEPORT-MCMORAN GOLD CO. (NOW INDEPENDENCE MINING CO.). SEE RECORDS W700398 (NORTH SAMMY CREEK DEPOSIT) AND W700399 (SOUTH SAMMY CREEK DEPOSIT) FOR THE OTHER TWO.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-1988 La Pointe, D.D. Nevada Bureau of Mines and Geology
Updater 01-JAN-1993 Phinisey, J. D. (Marcus, S.) U.S. Geological Survey

Beyond USGS

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

Maps centered on this site

Authoritative Nevada resources

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