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Piermont

Past Producer in White Pine county in Nevada, United States with commodities Silver, Gold, Copper, Lead
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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. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  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 10072158
MRDS ID W016467
Record type Site
Current site name Piermont
Related records 10247404

Geographic coordinates

Geographic coordinates: -114.55169, 39.48438 (WGS84)
Elevation 2012
Relative position NEAR MOUTH OF PIERMONT CANYON ON NORTH SIDE

Site location context

Political divisions (FIPS codes)

White Pine(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

North Schell Peak(quadrangle 1:24,000 scale)

Ely(quadrangle 1:100,000 scale)

Ely(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Spring-Steptoe Valleys(hydrologic unit)

Central Nevada Desert Basins(hydrologic accounting unit)

Central Nevada Desert Basins(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 White Pine

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 019N 066E 28 Nevada

Comments on the location information

  • LATITUDE-LONGITUDE LOCATION IS APPROXIMATELY THE CENTER OF THE MOUNTAIN RANGE. LAND STATUS IS PREDOMINATELY BLM ADMINISTERED AND STATE LANDS ARE THE SECOND LARGEST GROUP. DRAINAGE AREA CODES ALSO INCLUDE 13030102 AND 13030103. THE CABALLO MOUNTAINS ARE ABOUT 30 MILES LONG TRENDING NORTH-SOUTH, FROM 6 TO 11 MILES WIDE, AND COVER ABOUT 165 SQUARE MILES. ELEVATIONS RANGE FROM 4000 FT. TO 7500 FT..
  • NEAR MOUTH OF PIERMONT CANYON

Commodities

Commodity Importance
Silver Primary
Gold Secondary
Copper Secondary
Lead Secondary

Materials information

Materials Type of material
Gold Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Dolomite

Nearby scientific data

(1) -114.55169, 39.48438
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Rocks Displaced Along Faults

Ore body information

  • Strike N-S
    Dip W

Controls for ore emplacement

  • Fault Bedding Fault And Normal Fault.

Comments on the geologic information

  • THE STEEP, WEST-FACING ESCARPMENT OF THE CABALLO MOUNTAINS PARALLELS THE RIO GRANDE VALLEY AND EXPOSES PRECAMBRIAN ROCKS OVERLAIN BY ABOUT 5000 FT. OF PALEOZOIC, MOSTLY MARINE, SEDIMENTARY ROCKS. THE PREC. ROCKS CONSIST OF GRANITE AND LESSER AMOUNTS OF SCHIST AND GNEISS. THE SEDIMENTARY SEQUENCE BEGINS WITH UPPER CAMB. TO LOWER ORD. BLISS SANDSTONE FM. AND OVERLAIN IN ASCENDING ORDER BY ORD. EL PASO LIMESTONE FM., LOWER ORD. MONTOYA LIMESTONE FM., MID SIL. FUSSELMAN DOLOMITE FM., UPPER DEV. PERCHA SHALE FM., LOWER MISS. LAKE VALLEY FM., MID TO UPPER MAGDALENA GROUP; AND LOWER PERM. ABO FM. IS EXPOSED ON THE EASTERN, DIP SLOPE SIDE OF THE MOUNTAIN ALONG WITH PERM. CHUPADERA FM., CRET. MANCOS FM. AND TERT-CRET. IGNEOUS ROCKS. TECTONIC SETTING IS CONTINENTAL PLATFORM DISRUPTED BY CENOZOIC VULCANISM AND EXTENSIVE BASIN AND RANGE DEFORMATION.
  • ORE MINED AROUND AND ALONG A BEDDING FAULT

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1869
Year of first production 1870

Mining district

District name Piermont

Land status

Ownership category National Forest

Comments on the production information

  • ORE AVERAGED 13 OZ AG AND .03 OZ AU PER TON

Workings at the site

  • Type of workings Unknown
    Length 4572M
    Overall depth 304.8M

Comments on the workings information

  • THE MINE WAS REPORTED TO BE DEVELOPED BY TWO ADITS 3000 FT AND 1500 FT LONG, THREE INCLINED SHAFTS, THE DEEPEST TO 1,000 FT. AND ABOUT 10,500 FT OF DRIFTS AND CROSSCUTS

Comments on development

  • PIERMONT DISTRICT WAS ORGANIZED IN 1869. FIVE TONS WERE MINED IN 1870 AND A MILL WAS BUILT IN 1871 BUT SHUT DOWN IN 1873. MINE WAS CLOSED UNTIL 1916 WHEN 20 TONS WERE TREATED. EXPLORATION RESUMED IN 1926 WITH PRODUCTION FROM 1927 TO 1930.OTHER PERIODS OF PRODUCTION WERE 1935-1937, 1940-1942 AND 1953

Reference information

Bibliographic references

  • Deposit

    HOSE, BLAKE, SMITH, 1976, GEOLOGY AND MINERAL RESOURCES OF WHITE PINE CO, NEV., NEV BUREAU OF MINES AND GEOLOGY BUL 85

  • Deposit

    LINCOLN, F.C., 1923, MINING DISTRICTS AND MINERAL RESOURCES OF NEVADA; NEVADA NEWSLETTER PUBLISHING CO, RENO, NV

  • Deposit

    NBMG FILE 336, PRESS CLIPPINGS, 1914, ENG. AND MIN. JOUR.

  • Deposit

    WEED, W.H.,ED., 1922, THE MINES HANDBOOK, VOL. XV, P.1303.

  • Deposit

    RAYMOND, R.W., 1871, USBM MINERALS YEARBOOK, P. 203-204.

  • Deposit

    COUCH, B.F. AND CARPENTER, J.A., 1943, NBMG BULL 38, P.152.

  • Production

    HOSE, 1976

General comments

Subject category Comment text
Deposit MOST DEPOSITS ARE VEINS IN FAULT-FRACTURE ZONES. SOME IRREGULAR REPLACEMENT BODIES OCCUR AND ONE LARGE BEDDED DEPOSIT OF OOLITIC HEMATITE OCCURS.
Deposit CRIB SITES AND THEIR RECORD NUMBERS FOR THIS DISTRICT ARE BLACK JACK GROUP(D001313), DEWEY AND WHITE SWAN MINE(D000054), ILLINOIS GROUP(W006930), JONES-REILAND CLAIMS(D001315), LYDA K MINE(W016593), MANGANESE HILL GROUP(D001314), NAKAYE MINE(W016595), SIERRITE MINE(W016594) ; INFO.SRC : 1 PUB LIT
Deposit THE PIERMONT LEDGE WAS STOPED ALONG A BEDDING FAULT IN THE LOWER PART OF A BRECCIATED STRATUM OF LIMESTONE AND MARBLE DIPPING 45W BETWEEN 2 STRATA OF QUARTZITE. NEAR THE SURFACE THE LIMESTONE AND BEDDING FAULT ARE CUT BY A NORMAL FAULT THAT DIPS 35 SE. ABOVE THE NORMAL FAULT, LIMESTONE, QUARTZITE AND BLACK SCHIST BEDS DIP WEST, EXCEPT WHERE DRAG-FOLDING NEAR THE FAULT REVERSES THEIR DIP. SOME ORE WAS MINED ABOVE AND ALONG THE NORMAL FAULT FROM THE EAST-DIPPING LIMB OF THE DRAG FOLD IN DEEPER PARTS OF THE MINE THE WALLS OF THE LEDGE ARE OF DIFFERENT ROCKS (POSSIBLY SLATE AND QUARTZITE OR BRECCIATED LIMESTONE AND PORPHYRY).

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1976 Weeks, Robert U.S. Geological Survey
Updater 01-JAN-1984 La Pointe, D.D. (Tingley, J.V.) 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.