Bradshaw Mine

The Bradshaw Mine is a silver and gold mine located in Lincoln county, Nevada.

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: Bradshaw Mine

Commodity

Primary: Silver
Primary: Gold
Tertiary: Copper
Tertiary: Uranium

Location

State: Nevada
County: Lincoln
District: Atlanta District; Silver Park District; Silver Springs 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

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Form: LENS, TABULAR TO IRREGULAR

Structure

Type: L
Description: Fault

Alterations

Alteration Type: L
Alteration Text: Silicification

Rocks

Name: Limestone
Role: Host
Age Type: Host Rock Unit
Age Young: Late Ordovician

Analytical Data

Not available

Materials

Ore: Argentite
Gangue: Goethite
Gangue: Quartz

Comments

Comment (Geology): ORE IN 2 ZONES OF RED JASPEROID A WESTERN ZONE 500 FEET LONG AND 150 FEET WIDE, EASTERN ZONE IS SMALLER NARROW N60W STRINGERS AND CREVICES CARRY OXIDIZED AG MINERALS

Comment (Deposit): WORKINGS PENETRATE A LARGE SILICIFIED OUTCROP ON THE BRADSHAW FAULT ZONE. THE SILICIFIED ROCK DIPS ABOUT 35 NE AND IS ELONGATE NW-SE PARALLEL TO THE FAULT ZONE. THE ROCK IS SIMILAR TO THAT IN THE ATLANTA MINE EXCEPT THAT IT HAS FEWER OPEN SPACES. BRECCIA FRAGMENTS APPEAR TO BE COMPLETELY SILICIFIED CARBONATE ROCK. THE DEEPEST PORTIONS OF THE MINE PENETRATE CARBONATE BEDS WHICH HAVE BEEN SILICIFIED INTACT WITH ONLY MINOR BRECCIATION. NO SULFIDE MINERALS WERE FOUND BUT LIMONITE PRESENT IN OPEN SPACES HAS PROBABLY BEEN DERIVED FROM OXIDATION OF PYRITE. SAMPLING DONE BY STANDARD SLAG CO INDICATES WIDESPREAD AU AND AG MINERALIZATION PRESENT AT THE BRADSHAW MINE.INU VISIBLE U MINERALS ARE PRESENT, BUT A RADIOMETRIC SURVEY OF THE MINE DUMP IN 1978 INDICATES ANOMALOUS RADIOACTIVITY.

Comment (Workings): LARGE OPEN PIT AND AN INCLINED SHAFT DEVELOPED ON THE WESTERN JASPEROID ZONE. ONE ADIT WITH ABOUT 150 FT OF WORKINGS. ONE DRIFT IS PERPENDICULAR TO THE FAULT ZONE AND 2 DRIFTS PARALLEL THE FAULT ZONE.. ONE ADIT WITH ABOUT 150 FT OF WORKINGS. ONE DRIFT IS PERPENDICULAR TO THE FAULT ZONE AND 2 DRIFTS PARALLEL THE FAULT ZONE.

Comment (Location): AREA UNSURVEYED. ; INFO FROM LAND.ST :(1972)

References

Reference (Deposit): TSCHANTZ CM & PAMPEYAN EH, GEOLOGY AND MINERAL DEPOSITS OF LINCOLN CO., NEV. BUREAU OF MINES BULL 73

Reference (Deposit): HILL, J. M., 1916, USGS BULL 648

Reference (Deposit): NBMG MINING DISTRICT FILE 164

Reference (Deposit): COX, JOHN W., 1981, GEOLOGY AND MINERALIZATION OF THE ATLANTA DISTRICT, LINCOLN COUNTY, NEVADA; M. S. THESIS, UNIV NEVADA, RENO.

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.