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Tunnel Hill Mine

Producer in Pershing county in Nevada, United States with commodity Diatomite
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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. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Ownership information
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10042439
MRDS ID M060234
Record type Site
Current site name Tunnel Hill Mine
Alternate or previous names Eagle Picher Mine, NBMG Sample Site 2727
Related records 10198157

Geographic coordinates

Geographic coordinates: -118.78988, 40.26461 (WGS84)
Elevation 1550
Relative position WEST SLOPE TRINITY RANGE.

Site location context

Political divisions (FIPS codes)

Pershing(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Seven Troughs SE(quadrangle 1:24,000 scale)

Lovelock(quadrangle 1:100,000 scale)

Lovelock(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Granite Springs Valley(hydrologic unit)

Truckee(hydrologic accounting unit)

Central Lahontan(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 028N 028E 25 Nevada

Comments on the location information

  • ACCESSIBLE VIA HAUL ROAD TO PROPERTY.

Commodities

Commodity Importance
Diatomite Primary

Materials information

Materials Type of material
Diatomite Ore

Analytical data

Result SAMPLE 2727 OF DIATOMITE CONTAINS 0.7 % FE, 0.2 % MG, 0.2 % CA, 0.1 % TI, 10 PPM MN, 70 PPM B, 100 PPM BA, 2 PPM BE, 10 PPM CU, 7 PPM MO, 5 PPM NI, 5 PPM SC, 100 PPM V, AND 30 PPM ZR.

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock
    Stratigraphic age (youngest) Miocene

Nearby scientific data

(1) -118.78988, 40.26461
ListMap

Economic information

Ore body information

  • Thickness 16.76M

Controls for ore emplacement

  • Stratigraphic In Lake Deposits In Basin

Comments on the geologic information

  • THREE DIATOMITE BEDS 4 TO 55 FT THICK INTERBEDDED WITH TUFF AND SANDSTONE WITHIN STRATIGRAPHIC INTERVAL OF 150 FT; OPAL IS A MINOR IMPURITY.

Economic information about the deposit and operations

Development status Producer
Commodity type Non-metallic
Deposit size Medium
Significant No

Mining district

District name Velvet District

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Eagle-Picher Industries, Inc.
    First year 1984

Workings at the site

  • Type of workings Surface
    Length 335.28M
    Overall depth 15.24M

Comments on the workings information

  • TWO OPEN PITS; MAIN ONE IS 1100 FT. X 700 FT X 50 FT. DEEP. BY 1984, MAIN PIT WAS ABOUT 1600 FT LONG (N2SE) UP TO 800 FT WIDE AT SW END AND UP TO 80 FT DEEP.

Comments on development

  • DEVELOPED BY 2 OPEN PITS, 60 BULLDOZER CUTS AND 42 DRILL HOLES. NO ACTIVITY AT TIME OF EXAMINATION IN 1984, BUT MINE IS INTERMITTENTLY ACTIVE.

Reference information

Bibliographic references

  • Deposit

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

  • Deposit

    SOUTHERN PACIFIC CO., 1964, MINERALS FOR INDUSTRY-NORTHERN NEVADA & NORTHWESTERN UTAH SUMMARY OF GEOLOGIC SURVEY 1955-1961, V.1, SO. PACIFIC CO., SAN FRANCISCO, P. 42.

  • Deposit

    PAPKE, K.G., 11 OCT 84, NBMG FIELD EXAMINATION AND SAMPLE ANALYSIS.

  • Deposit

    NBMG STAFF, 1985, NBMG OFR 85-3.

  • Production

    JOHNSON, M.G., 1977

General comments

Subject category Comment text
Deposit WORKED BY TWO OPEN PITS; MAIN PIT IS 1100 X 700 FT. AND 50 FT DEEP. DEVELOPED BY 60 BULLDOZER CUTS AND 42 DRILL HOLES ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; 3 FIELD OBSERV
Deposit MIOCENE DIATOMITE UNIT IN SMALL BASIN COMPLETELY SURROUNDED BY BASALT HILLS. DIATOMITE DIPS 15 DEGREES OR LESS SOUTH OR EAST WITH TOTAL EXPOSED STRATIGRAPHIC THICKNESS OF 100 FT. FAULTS ARE COMMON (MOSTLY HIGH-ANGLE) WITH OFFSETS OF LESS THAN 10 FT. MINOR FLEXURES ARE ALSO PRESENT, SOME CAUSED BY SOFT-BED FOLDING. IN THE LOWER PART OF THE SEQUENCE, BEDS OF IMPURITIES GENERALLY 2-12 IN. THICK ARE SPACED AT 0.5 TO 8 FT INTERVALS. MOST OF THESE BEDS ARE VOLCANIC GLASS WITH VARIED AMOUNTS OF GRIT; SOME ALSO CONTAIN DIATOMS. IN THE UPPER PART OF THE DIATOMITE UNIT, SEVERAL BEDS OF CROSS-CUTTING BEDS, APPARENTLY BECAUSE OF INFILLING, AND ONE SHOWS CUT-AND-FILL STRUCTURE INTO THE DIATOMITE. IN THE SW FACE, A THIN SLIVER OF BASALT IS DOWN-FAULTED ONTO DIATOMITE. BEDDING OF THE DIATOMITE RANGES FROM LAMINATED TO THIN-BEDDED. THE WHITE, FINE-GRAINED DIATOMITE CONSISTS MOSTLY OF MELOSIRA. THE MATERIAL IS VERY SLIGHTLY IRON-STAINED LOCALLY AND CONTAINS A FEW VERY THIN BEDS RICH IN DARK
Deposit IRON OXIDES.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1973 Johnson, Maureen G. U.S. Geological Survey
Updater 01-MAR-1987 La Pointe, D.D. Nevada Bureau of Mines and Geology

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.