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Nivloc Mine

Past Producer in Esmeralda county in Nevada, United States with commodities Silver, Gold, 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. Alteration
  9. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Geologic structures
  13. Ore body information
  14. Controls for ore emplacement
  15. Economic information about the deposit and operations
  16. Mining district
  17. Land status
  18. Ownership information
  19. Production statistics
  20. Workings at the site
  21. Links to other databases
  22. Bibliographic references
  23. General comments
  24. Reporter information

Geologic information

Identification information

Deposit ID 10046771
MRDS ID M241978
Record type Site
Current site name Nivloc Mine
Alternate or previous names Desert Silver, Big Horn Nos. 1-8, Desert Nos. 1-6, Vancouver Nos. 1-3,, Plata Nos. 1-10, Walter Nos. 1-3 Claims., NBMG Sample Site 1139.

Geographic coordinates

Geographic coordinates: -117.75815, 37.71577 (WGS84)
Elevation 1878
Relative position ABOUT 7.5 MILES S70 WEST FROM TOWN OF SILVER PEAK

Site location context

Political divisions (FIPS codes)

Esmeralda(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mohawk Mine(quadrangle 1:24,000 scale)

Goldfield(quadrangle 1:100,000 scale)

Goldfield(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Ralston-Stone Cabin Valleys(hydrologic unit)

Central Nevada Desert Basins(hydrologic accounting unit)

Central Nevada Desert Basins(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 Esmeralda

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 002S 038E 33 SE OF SE Nevada

Comments on the location information

  • ABOUT 1.5 MILES EAST OF COTTONWOOD SPRINGS. UTM IS TO ONE SHAFT ON THE PROPERTY ; INFO FROM LAND.ST :(1972)

Commodities

Commodity Importance
Silver Primary
Gold Secondary
Lead Tertiary

Materials information

Materials Type of material
Calcite Gangue
Quartz Gangue

Alteration

  • (Local) Argillization, Silicification

Mineral occurrence model information

Model code 150
USGS model code 25c
Deposit model name Epithermal vein, Comstock
Mark3 model number 16

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Rhyolite Of Cottonwood Springs
    Rock description Rhyolite Of Cottonwood Springs
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Late Cretaceous

Nearby scientific data

(1) -117.75815, 37.71577
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Silver Peak Caldera
Type of structure Local
Structure description Ne-Trending Faults

Ore body information

  • General form TABULAR
    Strike ABOUT N 55 E TO N 40 E
    Dip ABOUT 60 NW TO 70 NW
    Length 1609.3M
    Width 24M
    Depth to bottom 335.28M

Controls for ore emplacement

  • Ne-Trending Faults And Fractures

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant Yes
Discovery year 1907
Discoverer Tom Fisherman, Who Reported It To Harry Stimler
Year of first production 1925

Mining district

District name Silver Peak District (1865) (Red Mountain District, 1864)

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Mr. Colvin
    Home office Chicago
    First year 1923
  • Type Owner
    Owner Sunshine Mining Co. And Mid-Continent Mining Corp.
    First year 1970
  • Type Operator
    Owner Vollmer, F.
    Home office Silver Peak
    First year 1923
    Last year 1943
  • Type Operator
    Owner Braylorne, Ltd Of Canada
  • Type Operator
    Owner Sunshine And Midcontinent
    First year 1970

Production statistics

  • Year 1943
    Period 1937-1943
    Material AU
    Accuracy Accurate
    Description Cp_Grade: ^ 0.069 Oz/Ton Au.
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Gold Gold 2g/mt
  • Year 1943
    Period 1937-1943
    Material AG
    Accuracy Accurate
    Description Cp_Grade: ^12.2 Oz/Ton Ag
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Silver Silver 345g/mt
  • Year 1943
    Period 1937-1943
    Material AU AG ORE
    Accuracy Estimate
    Description Cp_Grade: ^ 0.05 Oz/Ton Au.
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Gold Gold 14g/mt
  • Year 1943
    Period 1937-1943
    Material AU AG ORE
    Accuracy Estimate
    Description Cp_Grade: ^11 Oz/Ton Ag
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Silver Silver 311g/mt

Comments on the production information

  • $2 MILLION TO $3 MILLION WORTH OF AG AND AU WAS PRODUCED FROM 1937 TO 1943

Workings at the site

  • Type of workings Underground
    Length 7315.2M
    Overall depth 396M

Comments on the workings information

  • MINE WORKINGS WERE BADLY CAVED IN 1960'S; 600-FT VERTICAL SHAFT WITH CROSSCUTS ON THE 440 AND 600 LEVELS. FROM THE 600-FT. LEVEL, AN INCLINED WINZE WAS DRIVEN TO JUST BELOW THE 900 FT. LEVEL. 5 MAIN LEVELS IN THE MINE

Comments on development

  • MAIN PERIOD OF PRODUCTION WAS 1937-1943. IT WAS ESTIMATED IN 1966 THAT THERE WAS ABOUT 680,000 TONS OF "MILL-GRADE" ORE REMAINING IN THE MINE. STIMLER DID SOME NEAR-SURFACE WORK IN EARLY 1900'S, WHEN THE PROPERTY WAS KNOWN AS THE STIMLER MINE. IN ABOUT 1909, W.H. COLVIN, MILLIONAIRE CHICAGO BROKER, BOUGHT IS AND NAMED IT NIVLOC ("COLVIN", SPELLED BACKWARDS,) MINE WAS DORMANT, 1923-1928. COLVIN REOPENED IT IN 1928, WHEN IT WAS COMPRISED OF 13 CLAIMS

Reference information

Bibliographic references

  • Deposit

    KEITH, W.J., 1977; USGS BULL 1423

  • Deposit

    ALBERS, J.P. AND STEWART, J.H., 1972, GEOLOGY AND MINERAL DEPOSITS OF ESMERALDA COUNTY, NEVADA: N.B.M.G. BULL 78.

  • Deposit

    HUGHES, H.H., (1940'S), UNPUBLISHED REPORT ON BIG HORN EXTENSION GROUP MINING CLAIMS, NIVLOC, NV; ON FILE AT NBMG, FILE 101, ITEM 16

  • Deposit

    NIVLOC MINES, INC., 1946, UNPUBLISHED SUMMARY ON THE NIVLOC MINE; ON FILE AT NBMG, FILE 101, ITEM 24

  • Deposit

    SHAMBERGER, H.A., 1976, SILVER PEAK: HISTORIC MINING CAMPS OF NEVADA, SERIES, NO. 8; NEVADA HISTORICAL PRESS; CARSON CITY, NEVADA.

  • Deposit

    QUADE, J., 1982, FIELD EXAMINATION

  • Production

    ALBERS AND STEWART, 1972 P.71. HUGHES, UNPUB. REPORT ON THE BIG HORN EXTENSION CLAIMS, P.3.

  • Reserve-Resource

    EBBLEY, 1966, ROCKY MTN. MINERAL CONFERENCE TALK-NOTES.

General comments

Subject category Comment text
Deposit PRINCIPAL OPERATION OF THE NIVLOC MINE BEGAN IN 1938 UNDER THE DIRECTION OF BRAYLORNE, LTD. OF CANADA. OPERATING UNDER THE NAME OF DESERT SILVER, THE MINE PRODUCED OVER 400,000 TONS ORE UNTIL 1943 WHEN THE MINE PLANT AND MILL WERE SCRAPPED. FROM 1938 TO 1942, THE NIVLOC WAS NEVADA'S LARGEST SILVER PRODUCER. ; INFO.SRC : 1 PUB LIT
Deposit SHEETED VEINS WHICH SHRINK IN WITH AS THEY PASS OUT OF THE TERTIARY SECTION AT THE 900 LEVEL OF THE MINE. MAIN VEIN TRACEABLE FOR ABOUT A MILE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1981 La Pointe, D.D. (Tingley, J.V.) 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.