Eureka Mine

The Eureka Mine is a mercury mine located in Pershing county, Nevada at an elevation of 5,801 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

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Eureka Mine
Secondary: Silver Queen Mine
Secondary: Low
Secondary: Miller Basin Mine
Secondary: 4eureka Claims
Secondary: NBMG Sample Site 2674

Commodity

Primary: Mercury

Location

State: Nevada
County: Pershing
District: Mount Tobin District

Land Status

Land ownership: BLM Administrative Area
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.

Holdings

Not available

Workings

Not available

Ownership

Owner Name: F. J. Miller; Cesar, Harold, And Robert Siard
Years: 1979 -

Production

Year: 1959
Time Period: To 1959
Material type: HG
Description: Cp_Grade: ^10 Lb/Ton

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1955
Discovery Year: 1955
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

Not available

Mineral Deposit Model

Model Name: Hot-spring Hg

Orebody

Form: LENS

Form: LENS

Structure

Type: L
Description: Fault Zone

Alterations

Alteration Type: L
Alteration Text: Clay; Bleaching, Argillization Of Andesite.

Rocks

Name: Andesite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene

Name: Andesite
Role: Associated
Age Type: Host Rock
Age Young: Late Triassic

Name: Andesite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Triassic

Analytical Data

Analytical Data: NBMG SAMPLE 2674, A SELECT CHIP SAMPLE OF SILICIFIED FAULT BRECCIA, CEMENTED WITH SILICA, WITH LIMONITE AND CINNAB-AR, CONTAINS

Materials

Ore: Cinnabar
Gangue: Quartz
Gangue: Clay
Gangue: Barite
Gangue: Limonite
Gangue: Calcite

Comments

Comment (Production): MORE THAN 200 BUT LESS THAN 500 FLASKS HG PRODUCED CREDITED WITH ABOUT 500 FLASKS PRODUCTION, 1955-1958, 1968-1970. .SOME NEAR-SURFACE ORE YIELDED MORE THAN 200 LBS HG TO THE TON.

Comment (Location): PREVIOUS QUAD DESIGNATION = MOUNT TOBIN (1961) 1:625000

Comment (Development): ACTIVE FROM 1955 TO 1958 AND 1968 TO 1970. IN THE YEAR FOLLOWING DISCOVERY, LOW WAS REPORTED TO BE TREATING VERY RICH ORE IN AN INCLINED OIL-FIRED RETORT H-AVING 2 D-TYPE CHAMBERS. IT IS,HOWEVER,POSSIBLE THAT THE DEPOS-IT WAS WORKED AT AN EARLIER DATE, FOR IN 1980 THE REMAINS OF- AN OLDER PAN-TYPE RETORT WERE OBSERVED AT THE SITE, AND IN GO-LCONDA CANYON AT THE MINE ROAD JUNCTION, THERE IS YET ANOTHER -OLD RETORT. THE MAIN SHOOT OF RICH ORE, HOWEVER,WAS DOUBTLESS -LOCATED BY LOW, AND IN 1955-1959, ALONE OR WITH FRED MILLER AS- MILLER BASIN MINING CO., HE OBTAINED MORE THAN 250 FLASKS OF -HG USING THE D-RETORT. FROM 1962 TO 1971, HARRY R. BROWN, AS O-WNER OR LESSEE MINED AND RECOVERED A LITTLE ADDITIONAL MERCURY-, AND IT IS POSSIBLE THAT THE RIFFLES AND OTHER CONCENTRATING -EQUIPMENT SEEN AT THE DEPOSIT IN 1980 WERE USED BY HIM. SINCE -1971 THE PROPERTY HAS BEEN HELD BY F. J. MILLER & ASSOCS WITH -NO ORE PRODUCTION.

Comment (Deposit): BRECCIA ZONE IN GREY LIMESTONE; BRECCIA COMPOSED OF FRAGMENTS OF LIMESTONE AND SHALE IN CLAY MATRIX, STREAKED WITH- LENSES AND CLOTS OF LIMONITE. SILICIFIED BRECCIA FRAGMENTS AR-E LACED WITH SILICA AND CALCITE VEINLETS. VUGS IN QUARTZ VEINS- ARE LINED WITH STUBBY QUARTZ CRYSTALS. LARGE BLOCKS OF UNALTE-RED LIMESTONE (POSSIBLY SLIDE BLOCKS)REST ON SOFT ALTERED ROCK-S OF THE BRECCIA ZONE. BRECCIA APPEARS TO BE A LENS OR PIPE FO-RMED ALONG A NE STRUCTURE. ONLY A TRACE OF CINNABAR WAS FOUND -IN THE SAMPLE TAKEN.

Comment (Workings): SHAFT, DRIFTS, OPEN STOPE. SEVERAL ADITS ALONG SHEAR ZONE, OPEN CUT, STOPES EXPOSED IN CUT. SEVERAL BUILDINGS REMAIN IN THE OLD CAMP ALONG -WITH THE REMAINS OF A TUBE RETORT, (1985)

Comment (Geology): CINNABAR OCCURS IN A LENS-SHAPED ORE BODY ALONG A FAULT ZONE AND ALONG BEDDING PLANES ADJACENT TO THE FAUTY.

Comment (Deposit): DISCOVERED IN 1955 AND ACTIVE BETWEEN 1955 & 1958 AND 1968-70. THE EUREKA MINE PRODUCED MORE THAN 100 FLASKS OF HG IN 1956, AND LESS THAN 100 FLASKS IN FOLLOWING YEARS. THE SILVER QUEEN MINE IN SEC. 29 PRODUCED 3 FLASKS OF HG IN 1959, THIS MINE IS PROBABLY AN EXTENSION OF THE EUREKA MINE (SEC. 32). ORE BODY WAS MINED THROUGH A SHAFT, DRIFTS, AND AN OPEN STOPE. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; 3 FIELD OBSERV

References

Reference (Production): USBM UNPUB DATA

Reference (Deposit): BAILEY, E.H., RYTUBA, J. J., AND JONES, R. B., 1984, UNPUBLISHED DATA ON MERCURY DEPOSITS OF NEVADA.

Reference (Deposit): JOHNSON, M.G., 1977, GEOLOGY AND MINERAL DEPOSITS OF PERSHING COUNTY, NEVADA; NBMG BULL. 89

Reference (Deposit): HOLMES, 1965, MERCURY IN NEVADA; IN USBM 1C 8252

Reference (Deposit): TINGLEY, J. V. 20 JUN 85, NBMG FIELD EXAMINATION AND SAMPLE ANALYSIS

Reference (Deposit): NBMG STAFF, 1985, NBMG OFR 85-3.

Nevada Gold

Nevada has a total of 368 distinct gold districts. Of the of those, just 36 are major producers with production and/or reserves of over 1,000,000 ounces, 49 have production and/or reserves of over 100,000 ounces, with the rest having less than 100,000 ounces. Read more: Gold Districts of Nevada.