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Imlay Mine

Producer in Pershing county in Nevada, United States with commodities Gold, Silver, Tungsten, Copper, Lead, Boron-Borates
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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. 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 10042504
MRDS ID M060317
Record type Site
Current site name Imlay Mine
Alternate or previous names Imlay Prospect, NBMG Sample Sites 2526, 2527, 2528
Related records 10198308

Geographic coordinates

Geographic coordinates: -118.18098, 40.59989 (WGS84)
Elevation 1646
Relative position WEST FLANK, N END OF HUMBOLDT RANGE

Site location context

Political divisions (FIPS codes)

Pershing(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Star Peak(quadrangle 1:24,000 scale)

Eugene Mountains(quadrangle 1:100,000 scale)

Lovelock(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Humboldt(hydrologic unit)

Humboldt(hydrologic accounting unit)

Black Rock Desert-Humboldt(hydrologic subregion)

Great Basin(hydrologic region)

Geographic areas

Country State County
United States Nevada Pershing

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 032N 034E 29,30,31,32 SW (29); SE (30); NE (31); NW (32) Nevada

Comments on the location information

  • GOOD ACCESSIBILITY BY MAINTAINED DIRT ROAD IN IMLAY CANYON. UTM LOCATIONS FOR THE 3 NBMG SAMPLES AT THE PROPERTY A-RE AS FOLLOWS: 2526- N4494775, E400200; 2527- N4494975, E40025-0; 2528- N4494975, E400250.

Commodities

Commodity Importance
Gold Primary
Silver Primary
Tungsten Critical Primary
Copper Secondary
Lead Secondary
Boron-Borates Tertiary

Comments on the commodity information

  • ORE MINERALS NOT GIVEN IN THE LITERATURE

Materials information

Materials Type of material
Quartz Gangue

Alteration

  • (Local) Sericitization, Silicification Of Wallrock

Analytical data

Result SAMPLE 2526, CHIP TRENCH OF SILICIFIED, SERICITIZED, IRON OXIDE-STAINED GRASS VALLEY FM CONTAINS 5 % FE, 0.3 % MG,- 2 % CA, 0.2 % TI, 15 PPM MN, 2 PPM AG, 700 PPM AS, 0.05 PPM A-U (AA ANALYSIS), 1500 PPM B, 200 PPM BA, 1 PPM BE, 50 PPM CR, -50 PPM CU, 5 PPM NI, 50 PPM PB, 5 PPM SC, 100 PPM V, 20 PPM Y,- 500 PPM ZR. SAMPLE 2527, CHIP 4 M TRENCH, OF QUARTZ VEIN IN G-RASS VALLEY PHYLLITE CONTAINS 15 % FE, 0.5 % MG, 0.5 % CA, 0.2- % TI, 1000 PPM MN, 3 PPM AG, 1500 PPM AS, 0.05 PPM AU (AA ANA-LYSIS), +2000 PPM B, 500 PPM BA, 2 PPM BE, 50 PPM CO, 50 PPM C-R, 100 PPM CU, 70 PPM NI, 700 PPM PB, 10 PPM SC, 150 PPM V, 50- PPM Y, 700 PPM ZN, 500 PPM ZR. SAMPLE 2528, CHANNEL DUMP SAMP-LE, OF PHYLLITE WITH QUARTZ VEINS, STOCKWORKS, AU-BEARING IRON- OXIDE, PYRITE, CONTAINS 1 % FE, 0.5 % MG, 0.1 % TI, 10 PPM MN-, 5 PPM AG, 0.10 PPM AU, +2000 PPM B, 100 PPM BA, 1 PPM BE, 15- PPM CR, 7 PPM CU, 7 PPM NI, 150 PPM PB, 100 PPM SB, 30 PPM V,- 50 PPM ZR.

Mineral occurrence model information

Model code 273
USGS model code 36a
Deposit model name Low-sulfide Au-quartz vein
Mark3 model number 27

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite > Diabase
    Stratigraphic age (youngest) Late Triassic
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
  • Host or associated Host
    Rock type Metamorphic Rock > Phyllite
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
    Rock unit name Grass Valley;Prida
    Rock description Grass Valley;Prida
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -118.18098, 40.59989
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Humboldt City Thrust

Ore body information

  • General form VEIN
    Strike N75W
    Dip STEEPLY NE

Comments on the geologic information

  • QUARTZ FISSURE VEINS IN OR NEAR FAULT ZONES AND SOMETIMES AT CONTACTS OF DIABASE DIKES.

Economic information about the deposit and operations

Development status Producer
Commodity type Both
Deposit size Small
Significant No

Mining district

District name Imlay District; Humboldt District; Prince Royal District

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Owner
    Owner Dale, William
    First year 1984

Comments on the production information

  • ESTIMATED FROM TAILINGS;

Workings at the site

  • Type of workings Underground
    Length 457.2M
    Overall depth 76.2M

Comments on the workings information

  • A VERTICAL SHAFT 250 FT DEEP AND AN ADIT 1500 FT LONG DRIVEN FOR DRAINAGE. A MILL WAS OPERATED NEAR THE MINE.CURRENTLY, NUMEROUS BULLDOZER TRENCHES

Comments on development

  • WORKED BETWEEN 1907 AND 1918, AND IN 1935. IN MARCH 1936 THE MINE WAS IDLE. A SMALL TONNAGE OF ORE ESTIMATED TO CONTAIN ABOUT 0.5 % W03 WAS MINED IN 1956. CURRENTLY BEING PROSPECTED BY OWNE-R, WILLIAM DALE(?)(UNCERTAIN OF LAST NAME) WHO LIVES IN IMLAY -CANYON, BY BULLDOZER TRENCHING. ANACONDA IS SUPPOSED TO EXAMIN-E THE PROPERTY. OWNER STATES THAT ENTIRE VEIN ZONE.WILL PAN FR-EE GOLD. HE STATES THAT HE RAN 10 YDS OF DUMP THROUGH HIS PLAC-ER MILL AND RECOVERED ABOUT $40./YD IN GOLD.

Reference information

Bibliographic references

  • Deposit

    JOHNSON, M.G., 1977, GEOLOGY AND MINERAL DEPOSITS OF PERSHING COUNTY, NEVADA: NBMG BULL. 89

  • Deposit

    VANDERBURG, 1936, RECONNAISSANCE OF MINING DISTRICTS IN PERSHING COUNTY, NEV., USBM IC 6902

  • Deposit

    BONHAM, M. F., JR., 28 AUG 84, NBMG FIELD EXAMINATION AND SAMPLE ANALYSIS.

  • Deposit

    SILBERLING AND WALLACE, 1967, USGS MAP GO-666.

  • Deposit

    NBMG OFR 85-3

  • Deposit

    STAGER, H. K., IN PREPARATION, NBMG BULL ON TUNGSTEN IN NEVADA.

  • Production

    VANDERBURG, 1936; JOHNSON, 1977

General comments

Subject category Comment text
Deposit QUARTZ FISSURE VEINS IN OR NEAR FAULT ZONES AND SOMETIMES AT CONTACTS OF DIABASE DIKES. ZONE OF QUARTZ VEINS AND STOCKWORKS IS ABOUT 10 M WIDE. WALLROCK IS SERICITIZED PHYLLITE. THE QUARTZ VEIN WORKED- IN EARLY 1900'S IS ABOUT 0.33 M WIDE. SB-PB OXIDE STAINS, ABU-NDANT LIMONITE CASTS AFTER PYRITE. AREA IS NEAR CONTACT WITH U-PPER MEMBER PRIDA CARBONATES APPROXIMATELY 30-40 M ABOVE CONTA-CT. DEPOSIT APPEARS TO HAVE SOME POTENTIAL FOR BULK-MINEABLE A-U. GOOD ZONE OF QUARTZ STOCKWORKS AND ABUNDANT FE OXIDE AFTER -PYRITE IN PHYLLITES WITH LOCALLY STRONG SERICITIC ALTERATION.
Deposit THE IMLAY MINE WAS WORKED BETWEEN 1907 AND 1918 AND IN 1935. MARCH 1936 THE MINE WAS IDLE. THE MINE WAS DEVELOPED BY A VERTICAL SHAFT 250 FT. DEEP AND AN ADIT 1500 FT. LONG DRIVEN FOR DRAINAGE. A MILL WAS OPERATED NEAR THE MINE. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; 3 FIELD OBSERV

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1979 Harner, Joy L. (Roberts, Ralph J.) Nevada Bureau of Mines and Geology
Updater 01-OCT-1985 La Pointe, D.D. (Tingley, J.V.) Nevada Bureau of Mines and Geology
Updater 01-OCT-1980 Royse, Sue E. Nevada Bureau of Mines and Geology
Updater 01-SEP-1994 Li, Zhiping (Peters, S.) 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 Nevada resources

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