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Aurora Mine

Producer in Mineral county in Nevada, United States with commodities Gold, Silver, Lead, Selenium
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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. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Geologic structures
  13. Ore body information
  14. Controls for ore emplacement
  15. Economic information about the deposit and operations
  16. Mining district
  17. Land status
  18. Ownership information
  19. Production statistics
  20. Reserves and resources
  21. Links to other databases
  22. Bibliographic references
  23. General comments
  24. Reporter information

Geologic information

Identification information

Deposit ID 10047159
MRDS ID M242411
Record type Site
Current site name Aurora Mine
Alternate or previous names Old Humboldt Mine Area, Humboldt West and Humboldt East Claims, Aurora Partnership Mine.
Related records 10173963

Geographic coordinates

Geographic coordinates: -118.88763, 38.2902 (WGS84)
Elevation 2316
Relative position 35 MILES WEST OF HAWTHORNE

Site location context

Political divisions (FIPS codes)

Mineral(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Aurora(quadrangle 1:24,000 scale)

Excelsior Mountains(quadrangle 1:100,000 scale)

Walker Lake(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

East Walker(hydrologic unit)

Walker(hydrologic accounting unit)

Central Lahontan(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 Mineral

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 005N 028E 17 Nevada

Comments on the location information

  • UTM IS TO NEAR CENTER OF OPEN PIT AREA. THIS IS THE PROPERTY BEING MINED IN 1990 BY OPEN PIT BY THE AURORA PARTNERSHIP (MINEREX AND ELECTRA NORTHWEST) ON THE HUMBOLDT VEIN. DO NOT CONFUSE THIS DEVELOPMENT WITH MINING SINCE 1987 BY NEVADA GOLDFIELDS ON THE NEARBY PROSPECTUS VEIN, ALSO KNOWN AS THE AURORA MINE. . INFO FROM LAND.ST :1972

Commodities

Commodity Importance
Gold Primary
Silver Primary
Lead Tertiary
Selenium Tertiary

Materials information

Materials Type of material
Acanthite Ore
Electrum Ore
Naumannite Ore
Calcite Gangue
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Propylitic, Intense Silicification

Mineral occurrence model information

Model code 150
USGS model code 25c
Deposit model name Epithermal vein, Comstock
Mark3 model number 16

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic)
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Latite
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Latite

Nearby scientific data

(1) -118.88763, 38.2902
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Fault System Striking N 45-55 E, Dip 30 Se To 75 Nw; Also N-S Faults, Steep, Which Offset The Ne Ones

Ore body information

  • General form LENSES, STRINGERS
    Strike N45-55E
    Dip 30SE TO 75NW
    Length 243.84M
    Width 39.62M

Controls for ore emplacement

  • Faults Striking N 45-55 E, Dip 30 Se To 75 Nw, With Post-Mineral Movement

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1865

Mining district

District name Aurora District

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Centennial Exploration Corp., B. Mountford, President
    Home office P.O. Box 2311, Hawthorne Nv 89418
    First year 1983
  • Type Owner-Operator
    Owner Echo Bay Mines
    Home office P.O. Box 2311, Hawthorne Nv 89418
    First year 1988

Production statistics

  • Year 1983
    Material ORE AU AG
    Accuracy Estimate
    Description Ap_Grade: ^0.1 Oz/T Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 3g/mt

Reserves and resources

  • Type In-situ
    Estimate year 1982
    Commodity Subtype Grade units Group Importance Year
    Gold Au 3.67 g/mt Gold Major 1982
    Silver Ag 8.47 g/mt Silver Major 1982
  • Type In-situ
    Estimate year 1983
    Commodity Subtype Grade units Group Importance Year
    Silver Ag 8.47 g/mt Silver Major 1983
  • Type In-situ
    Estimate year 1993
    Commodity Subtype Grade units Group Importance Year
    Gold Au 3.642 g/mt Gold Major 1993
    Silver Ag 8.47 g/mt Silver Major 1993
  • Type In-situ
    Estimate year 1987
    Commodity Subtype Grade units Group Importance Year
    Gold Au 4.235 g/mt Gold Major 1987
    Silver Ag 8.47 g/mt Silver Major 1987
  • Type In-situ
    Estimate year 1990
    Commodity Subtype Grade units Group Importance Year
    Gold Au 3.105 g/mt Gold Major 1990

Comments on the reserve resource information

  • 1987 FIGURE ARE PROVEN AND PROBABLE RESERVES 1990, 1992-NBMG, MI-1992
  • POSSIBLY AS MUCH AS THIS.

Comments on the workings information

  • OPEN PIT MINE IN AREA OF OLD HUMBOLDT SHAFT. MILL EXPANSION FROM 275 TPD TO 385 TPD.

Comments on development

  • LISTED AS AN ACTIVE OPEN PIT MINE AND HEAP LEACH OPERATION IN 1983, EMPLOYING 16 PERSONS. IN 1982, ELECTRA NORTHWEST RESOURCES COMBINED WITH PACIFIC NORTHWEST TO FORM ELECTRA NORTHWEST RESOURCES, LTD. TO DEVELOP ITS PROPERTY, THE AURORA MINE, OVER 200 CLAIMS.IT WAS CONDUCTING DRILLING AND ENGINEERING PROGRAMS AT THAT TIME. PLANS WERE THEN BEING MADE FOR PROCESSING AN INITIAL 30000 TONS. ELECTRA HAD BEEN EXPLORING THE PROPERTY SINCE 1980 OR EARLIER. ELECTRA NORTHWEST FORMED A JOINT VENTURE WITH CENTENNIAL MINERALS, AND BEGAN PRODUCTION IN JULY 1983 AT 1000-1500 TPD. INITIAL RECOVERIES AVERAGED 0.08 OZ/T AU FROM MATERIAL GRADING 0.12 OZ/TON AU. FULL SCALE PRODUCTION WAS PLANNED FOR 1984. MINE LIFE PROJECTED AT LEAST 5 YEARS. ELECTRA RESOURCES WAS DRILLING THE PROPERTY IN 1980-1981, THEN MERGED WITH PACIFIC NORTHWEST TO FORM ELECTRA NORTHWEST RES. LTD. NEVADA COLDFIELDS OPENED AND ADJACENT AURORA MINE AND IN 1987, EXPECTED TO PRODUCE 100--- OZ AU AND 150000 OZ AG IN ITS 5 YR PROJECTED
  • LIFE.

Reference information

Bibliographic references

  • Deposit

    STATE DIVISION OF MINE INSPECTION, DEC. 1983, DIRECTORY OF NEVADA MINE OPERATIONS ACTIVE DURING CALENDAR YEAR 1983

  • Deposit

    NBMG MINING DISTRICT FILES, FILE 189, PRESS CLIPPINGS

  • Deposit

    GREEN, W.R., 1962, STRUCTURAL CONTROL OF MINERALIZATION AT THE AURORA MINING DISTRICT, MINERAL COUNTY, NEVADA: M.S. THESIS, UNIV. OF NEVADA

  • Deposit

    "CONS. NEVADA REPORT LOSS AS MINE EXPANSION PROCEEDS," THE NORTHERN MINER, JUNE 7, 1993, P. 3.

  • Deposit

    BONHAM, H. F. AND HESS, R. H., 1993, MAJOR PRECIOUS-METAL DEPOSITS IN THE NEVADA MINERAL INDUSTRY-1992; NBMG SPECIAL PUBLICATION MI-1992, P24.

  • Deposit

    BONHAM, H. F. AND HESS, R. H., 1991, BULK-MINEABLE PRECIOUS-METAL DEPOSITS IN THE NEVADA MINERAL INDUSTRY-1990; NBMG SPECIAL PUBLICATION MI-1990, P24.

  • Deposit

    METALS ECONOMICS GROUP, 1987, A STUDY OF ACTIVE U.S. GOLD MINES; BOULDER, CO , PP51-56

  • Deposit

    NBMG,1994, MI-1993.

  • Deposit

    NEVADA DIVISION OF MINERALS, 1994

  • Deposit

    CONSOLIDATED NEVADA GOLDFIELDS, QUARTERLY REPORT, 1994

  • Production

    NBMG DISTRICT FILE 189, PRESS CLIPPINGS. 1985-METALS ECONOMICS GROUP 1991, 1992-NBMG MI-1992 NBMG MI-1993

  • Reserve-Resource

    NBMG MINING DISTRICT FILES, FILE 189, PRESS CLIPPINGS NBMG, 1990, THE NEVADA MINERAL INDUSTRY 1990; NBMG SPECIAL PUBLICATION MI-1990. NBMG MI-1993.

General comments

Subject category Comment text
Deposit A MINERALIZED ZONE ON THE HUMBOLDT VEIN; PROSPECTUS VEIN, JUNIATA VEINS; ALL NE-TRENDING VEINS.
Deposit Discovery Year: 1860'S

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1984 La Pointe, D.D. (Tingley, J.V.) Nevada Bureau of Mines and Geology
Updater 01-NOV-1988 Phinisey, J. D. (Marcus, S.) Nevada Bureau of Mines and Geology
Updater 01-SEP-1991 La Pointe, D.D. U.S. Geological Survey
Updater 01-NOV-1993 Humphries, S. E. (Marcus, S.) U.S. Geological Survey
Updater 01-SEP-1994 Li, Zhiping (Moyer, Lorre A.) 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.