Nivloc Mine

The Nivloc Mine is a silver mine located in Esmeralda county, Nevada at an elevation of 6,161 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Name: Nivloc Mine  

State:  Nevada

County:  Esmeralda

Elevation: 6,161 Feet (1,878 Meters)

Primary Mineral: Silver

Lat, Long: 37.71583, -117.75722

Map: View on Google Maps


Satelite image of the Nivloc Mine

Nivloc Mine MRDS details

Site Name

Primary: Nivloc Mine
Secondary: Desert Silver
Secondary: Big Horn Nos. 1-8, Desert Nos. 1-6, Vancouver Nos. 1-3,
Secondary: Plata Nos. 1-10, Walter Nos. 1-3 Claims.
Secondary: NBMG Sample Site 1139.


Commodity

Primary: Silver
Secondary: Gold
Tertiary: Lead


Location

State: Nevada
County: Esmeralda
District: Silver Peak District (1865) (Red Mountain District, 1864)


Land Status

Land ownership: Private


Holdings

Not available


Workings

Type: Underground


Ownership

Owner Name: Mr. Colvin
Home Office: Chicago
Years: 1923 -

Owner Name: Vollmer, F.
Home Office: Silver Peak
Years: 1923 - 1943

Owner Name: Sunshine And Midcontinent
Years: 1970 -

Owner Name: Braylorne, Ltd Of Canada

Owner Name: Sunshine Mining Co. And Mid-Continent Mining Corp.
Years: 1970 -


Production

Year: 1943
Time Period: 1937-1943
Material type: AU
Description: Cp_Grade: ^ 0.069 Oz/Ton Au.
Year: 1943
Time Period: 1937-1943
Material type: AG
Description: Cp_Grade: ^12.2 Oz/Ton Ag
Year: 1943
Time Period: 1937-1943
Material type: AU AG ORE
Description: Cp_Grade: ^ 0.05 Oz/Ton Au.
Year: 1943
Time Period: 1937-1943
Material type: AU AG ORE
Description: Cp_Grade: ^11 Oz/Ton Ag


Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1925
Discovery Year: 1907
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: Y
Deposit Size: S


Physiography

Not available


Mineral Deposit Model

Model Name: Epithermal vein, Comstock


Orebody

Form: TABULAR


Structure

Type: R
Description: Silver Peak Caldera

Type: L
Description: Ne-Trending Faults


Alterations

Alteration Type: L
Alteration Text: Argillization, Silicification


Rocks

Name: Limestone
Role: Host
Age Type: Associated Rock Unit
Age Young: Pliocene

Name: Limestone
Role: Host
Age Type: Host Rock Unit
Age Young: Pliocene

Name: Limestone
Role: Host
Age Type: Associated Rock
Age Young: Late Cretaceous


Analytical Data

Not available


Materials

Gangue: Calcite
Gangue: Quartz


Comments

Comment (Production): $2 MILLION TO $3 MILLION WORTH OF AG AND AU WAS PRODUCED FROM 1937 TO 1943

Comment (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

Comment (Workings): 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

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

Comment (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

Comment (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


References

Reference (Deposit): KEITH, W.J., 1977; USGS BULL 1423

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

Reference (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

Reference (Deposit): NIVLOC MINES, INC., 1946, UNPUBLISHED SUMMARY ON THE NIVLOC MINE; ON FILE AT NBMG, FILE 101, ITEM 24

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

Reference (Deposit): QUADE, J., 1982, FIELD EXAMINATION

Reference (Production): ALBERS AND STEWART, 1972 P.71. HUGHES, UNPUB. REPORT ON THE BIG HORN EXTENSION CLAIMS, P.3.

Reference (Reserve-Resource): EBBLEY, 1966, ROCKY MTN. MINERAL CONFERENCE TALK-NOTES.