1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Poker Brown Mine

Past Producer in Pershing county in Nevada, United States with commodities Silver, Lead, Gold
Map
XML
JSON
KML
B
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. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Ownership information
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10042489
MRDS ID M060297
Record type Site
Current site name Poker Brown Mine
Alternate or previous names Old Tom Mine, NBMG Sample Site 2835

Geographic coordinates

Geographic coordinates: -118.41987, 40.536 (WGS84)
Elevation 1341
Relative position SOUTHERN TIP OF ANTELOPE RANGE

Site location context

Political divisions (FIPS codes)

Pershing(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Poker Brown(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)

Federal lands

Bureau of Land Management(Bureau of Land Management NV)

Bureau of Land Management NV BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Nevada Pershing

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 031N 032E 19 Nevada

Commodities

Commodity Importance
Silver Primary
Lead Primary
Gold Secondary

Materials information

Materials Type of material
Galena Ore
Gold Ore
Lead Ore
Quartz Gangue

Analytical data

Result SAMPLE 2835 CONTAINS 2 % FE, 0.3 % MG, 0.5 % CA, 0.01 % TI, 150 PPM MN, 500 PPM AG, +10000 PPM AS, +2000 PPM B, 200 PPM BA, 20 PPM BI, +500 PPM CD, 50 PPM CU, 30 PPM MO, 5 PPM NI, +20000 PPM PB, 300 PPM SB, 150 PPM SR, 100 PPM V, 10000 PPM ZN, AND 0.25 PPM AU, BY AA ANALYSIS.

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
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Metamorphic Rock > Hornfels
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -118.41987, 40.536
ListMap

Economic information

Ore body information

  • General form VEIN
    Strike N40-60E
    Dip 80 NE, 45 SE
    Width 1.52M

Comments on the geologic information

  • QUARTZ VEINS ARE LESS THAN 1 INCH TO 6 INCHES WIDE AND OCCUR MAINLY IN THE STATE. IRREGULAR MASSES OF QUARTZ ARE UP TO 5 FEET WIDE. THE PRINCIPAL VEIN SYSTEM TRENDS N40-60 DEGREES E AND DIPS 80 DEGREES NE, IN PLACES PARALLEL TO THE BEDDING AND IN PLACES PARALLEL TO THE SHEARS OR CLEAVAGE. ANOTHER LESS PROMINENT SYSTEM TRENDS N50-60 DEGREES E AND DIPS 45 DEGREES SE. THE VEINS CONTAIN BUNCHES OF ARGENTIFEROUS GALENA AND CARBONATE OF LEAD.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name San Jacinto District

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Thomsen, Mervel
    Home office Battle Mountain
    First year 1984

Comments on the workings information

  • DEVELOPED BY TRENCHES, PITS, ADITS AND ONE 150-FT SHAFT, DRILLING

Comments on development

  • ARGENTIFEROUS GALENA AND LEAD CARBONATES WERE DISCOVERED IN THE DISTRICT IN 1875. SOME DRILLING WITHIN THE PAST 5 YEARS, AND RECENT STAKING IN VICINITY OF THE MINE (1984).

Reference information

Bibliographic references

  • Deposit

    JOHNSON, M.G., 1977, GEOLOGY AND MINERAL DEPOSITS OFPERSHING COUNTY, NEVADA; NBMG BULL. 89.

  • Deposit

    VANDERBURG, 1936, RECONNAISSANCE OF MINING DISTRICTS IN PERSHING COUNTY, NEVADA; USBM 1C 6902

  • Deposit

    QUADE, JACK, 13 SEP 84, NBMG FIELD EXAMINATION REPORT AND SAMPLE ANALYSIS.

  • Deposit

    EARL, PHILLIP I., 30 NOV 86, "`POKER' BROWN; IN PURSUIT OF ORE AND CARDS": RENO GAZETTE JOURNAL.

General comments

Subject category Comment text
Deposit THE MINE IS ON A SERIES OF QUARTZ VEINS AND IRREGULAR MASSES. QUARTZ VEINS ARE LESS THAN 1 INCH TO 6 INCHES WIDE AND OCCUR MAINLY IN SLATE IRREGULAR MASSES OF QUARTZ ARE UP TO 5 FEET WIDE. THE PRINCIPAL VEIN SYSTEM TRENDS N40-60 DEGREES E AND DIPS 80 DEGREES NE, IN PLACES PARALLEL TO THE BEDDING AND IN PLACES PARALLEL TO THE SHEARS OR CLEAVAGE. ANOTHER LESS PROMINENT SYSTEM TRENDS N50-60 DEGREES E AND DIPS 45 DEGREES SE. THE VEINS CONTAIN BUNCHES OF ARGENTIFEROUS GALENA AND CARBONATE OF LEAD. HIGHLY IRREGULAR MASSES OF QUARTZ; BEST-PRODUCING VEINS WERE SMALL. SAMPLE 2835 HAS VISIBLE GALENA AND ARSENOPYRITE IN A CARBONATE-QUARTZ GANLE AND IN WHITE BULL QUARTZ.
Deposit ARGENTIFEROUS GALENA AND LEAD CARBONATES WAS DISCOVERED IN THE DISTRICT IN 1875. SOME SILVER-LEAD ORE WAS SHIPPED IN 1876. THE POKER BROWN MINE IS DEVELOPED BY TRENCHES, PITS, ADITS, AND ONE 150-FT. SHAFT ON A SERIES OF QUARTZ VEINS AND IRREGULAR MASSES OF QUARTZ. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; 3 FIELD OBSERV

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1980 Harner, Joy L. (Roberts, Ralph J.) Nevada Bureau of Mines and Geology
Updater 01-JAN-1987 La Pointe, D.D. 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.