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Pearl Hill Mine

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

Geologic information

Identification information

Deposit ID 10042480
MRDS ID M060285
Record type Site
Current site name Pearl Hill Mine
Alternate or previous names Pearl Hill Quarry, NBMG Sample Site 2726.
Related records 10270786

Geographic coordinates

Geographic coordinates: -118.5457, 40.28239 (WGS84)
Elevation 1524
Relative position ABOUT 4 MILES SOUTHWEST OF TRINITY CANYON.

Site location context

Political divisions (FIPS codes)

Pershing(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Poker Brown Spring(quadrangle 1:24,000 scale)

Lovelock(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 028N 031E 19 NE OF NW Nevada

Comments on the location information

  • ACCESSIBLE BY GOOD HAUL ROAD. JOHNSON (1977) PLACES THIS MINE IN TRINITY DISTRICT AS OPPOSED TO UNNAMED SMALL OCCURRENCES OF PERLITE IN ARABIA DISTRICT. ; INFO FROM LAND.ST :(1972)

Commodities

Commodity Importance
Perlite Primary

Alteration

  • (Local) Alteration Of Volcanic Glass.

Analytical data

Result SAMPLE 002726 IS A PERLITE SAMPLE WHICH HAS AN EXPANSION RATIO OF 10:1.

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff > Welded Tuff

Nearby scientific data

(1) -118.5457, 40.28239
ListMap

Economic information

Ore body information

  • General form BEDDED
    Dip 20-25 S
    Thickness 45.72M

Comments on the geologic information

  • THE PERLITE IS TYPICALLY BLUISH-GRAY, MASSIVE AND WELL-JOINTED AND IS ASSOCIATED WITH INTRUSIVE RHYOLITE DOMES. AN OBSIDIAN NODULE IN PERLITE WAS DATED BY FISSON TRACK METHOD AT 23 2 MY (MCKEE & MARVIN, 1973).

Economic information about the deposit and operations

Development status Producer
Commodity type Non-metallic
Deposit size Small
Significant No
Year of first production 1953

Mining district

District name Trinity District

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner U.S. Gypsum Co.
  • Type Owner
    Owner U.S. Gypsum Co.; Roger Brown, Works Manager
    Home office Empire, Nv 89405
    First year 1984

Workings at the site

  • Type of workings Surface
    Area 1.051HA
    Overall length 121.92M
    Overall width 91.44M

Comments on the workings information

  • OPEN PIT DEVELOPED BY A NUMBER OF BENCHES OVER A VERTICAL DISTANCE OF ABOUT 175 FEET. LOVELOCK PERLITE PLANT, WHERE MATERIAL IS PROCESSED, IS LOCATED IN SEC. 8, T27N, R32E.

Comments on development

  • NOT DEVELOPED UNTIL ABOUT 1950, WHEN U. S. GYPSUM PURCHASED THE DEPOSIT FROM SOUTHERN PACIFIC CO.

Reference information

Bibliographic references

  • Deposit

    PAPKE, K.G., 1984, FIELD EXAMINATION: NBMG UNPUBLISHED REPORT (TINGLEY) FILES.

  • Deposit

    JOHNSON, M. G., 1977, GEOLOGY AND MINERAL DEPOSITS OF PERSHING COUNTY, NEVADA: NBMG BULL. 89, PL. I, P. 96.

  • Deposit

    JONES, R.B. & PAPKE, K.G., 1984, ACTIVE MINES AND OIL FIELDS IN NEVADA: NBMG MAP 84 (OUT OF PRINT), SUPERSEDED BY DBM2.

  • Deposit

    STAFF, 1983, DIRECTORY OF NEVADA MINING OPERATIONS ACTIVE DURING CALENDAR YEAR 1983: NDMI.

  • Deposit

    PAPKE, K.G., 1973, INDUSTRIAL MINERAL DEPOSITS OF NEVADA: NBMG MAP 46.

  • Deposit

    SOUTHERN PACIFIC CO., 1964, MINERALS FOR INDUSTRY - NORTHERN NEVADA & NORTHWESTERN UTAH - SUMMARY OF GEOLOGIC SURVEY 1955-1961, V.1, SOUTHERN PACIFIC CO., SAN FRANCISCO, P. 49.

  • Deposit

    MCKEE, E.H., & MARVIN, R.M., 1973, SUMMARY OF RADIOMETRIC AGES OF TERTIARY VOLCANIC ROCKS IN NEVADA, PART IV, NORTHWESTERN NEVADA: ISOCHRON/WEST, NO. 10.

General comments

Subject category Comment text
Deposit THE PERLITE BODY IS EXPOSED IN THE ENTIRE PIT AND FOR A SHORT DISTANCE ABOVE IT. THE BANDING IN THE HANGING WALL WELDED TUFF IS APPROXIMATELY CONFORMABLE IN ATTITUDE TO THE CONTACT AND TO BANDED MATERIAL IN THE UNDERLYING PERLITE. SOME BANDED BEDS AND PODS OF STONY NON-EXPANDABLE MATERIAL UP TO 3-4 INCHES THICK ARE PRESENT IN THE PERLITE. THEY ARE SPARSE IN THE LOWER PART, BUT ABUNDANT WITHIN ABOUT 40 FEET OF THE UPPER CONTACT. THE STONY MATERIAL IS CHARACTERIZED BY ABUNDANT VUGS AND SOME COATINGS OF DUSKY-YELLOW COLOR. THE PERLITE IS PARTLY FRACTURED. ONION TEXTURE IS NOT PARTICULARLY WELL-DEVELOPED; MUCH OF THE MATERIAL BREAKS INTO EQUIDIMENSIONAL FRAGMENTS, OR, LESS COMMONLY, SPLINTERY FRAGMENTS. PERLITE GRADES TO NONGLASSY RHYOLITE.
Deposit THIS RECORD HAS BEEN MERGED WITH M242533, WHICH HAS BEEN DELETED.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1973 Johnson, Maureen G. Nevada Bureau of Mines and Geology
Updater 01-FEB-1981 Royse, Sue E. Nevada Bureau of Mines and Geology
Updater 01-JUL-1985 La Pointe, D.D. (Tingley, J.V.) Nevada Bureau of Mines and Geology
Updater 01-APR-1993 Phinisey, J. D. (Marcus, S.) U.S. Geological Survey
Updater 01-SEP-1993 Humphries, S. E. (Marcus, 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.