The O'Leary Prospect is a manganese mine located in Humboldt county, Nevada at an elevation of 5,499 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
Elevation: 5,499 Feet (1,676 Meters)
Commodity: Manganese
Lat, Long: 40.6925, -117.55139
Map: View on Google Maps
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.
O'Leary Prospect MRDS details
Site Name
Primary: O'Leary Prospect
Commodity
Primary: Manganese
Location
State: Nevada
County: Humboldt
District: Black Diablo District
Land Status
Land ownership: Private
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: Frank O'Leary
Years: 1959 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Deposit Type: Replacement
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
Not available
Mineral Deposit Model
Model Name: Volcanogenic Mn
Orebody
Form: LENTICULAR
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Analytical Data: REPRESENTATIVE HEAD SAMPLE ASSAYED 22.9 % MN, 2.1 % FE, 55.8 % SI02, 63.4 % INSOL., 0.039 % P, 1.9 % AL203, NO ZN, 1.06 % BA, 0.1 % CAO.
Materials
Ore: Psilomelane
Ore: Pyrolusite
Comments
Comment (Commodity): ORE CONSISTS OF VERY FINE GRAINS OF BRAUNITE, PYROLUSITE AND PSILOMELANE UNIFORMLY DISTRIBUTED THROUGHOUT A QUARTZITE GANGUE. IN PLACES MN OXIDES HAVE PARTLY REPLACED THE QUARTZITE SO THAT THE INDIVIDUAL QUARTZ GRAINS APPEAR SMOKEY. INTIMATE ASSOCIATION OF MN OXIDES WITH SILICEOUS GANGUE GREATLY INHIBITED BENEFICIATION OF ORE.
Comment (Development): OWING TO LACK OF EXPLORATION (AS OF 1959) EXTENT OF MINERALIZATIONWAS UNKNOWN
Comment (Deposit): BRAUNITE AND MN OXIDES INTIMATELY INTERGROWN WITH CHERT AND JASPER. DEPOSIT IS A REPLACEMENT OF SEDIMENTARY ROCKS. FOOTWALL IS SLATE; HANGING WALL IS SILICEOUS WITH LENSES OF JASPER AS MUCH AS 10 FT THICK. INTERBEDDED WITH THE MN OXIDES ARE THIN BEDS OF SILICIFIED SHALE AND LENSES OF JASPER RICH IN HEMATITE.
Comment (Location): 0.75 MILE NORTH OF BLACK DIABLO MINE . INFO FROM LAND.ST :(1972)
References
Reference (Deposit): USBM, 1959, RI 5446, P. 20-21.
Reference (Deposit): USBM, 1983, MILS DATA
Reference (Deposit): USBM, 1951, R.I. 4754, P. 14-15
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.
