The NBMG Sample Site 2305 is a gold and silver mine located in Humboldt county, Nevada at an elevation of 5,856 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: 5,856 Feet (1,785 Meters)
Commodity: Gold, Silver
Lat, Long: 40.83083, -117.52861
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.
NBMG Sample Site 2305 MRDS details
Site Name
Primary: NBMG Sample Site 2305
Commodity
Primary: Gold
Primary: Silver
Tertiary: Manganese
Tertiary: Lead
Tertiary: Zinc
Location
State: Nevada
County: Humboldt
District: Gold Run District; Adelaide 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: Past Producer
Deposit Type: Vein
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
Not available
Mineral Deposit Model
Model Name: Polymetallic veins
Orebody
Form: TABULAR
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Silicification; Argillization
Rocks
Name: Phyllite
Role: Host
Age Type: Host Rock Unit
Age Young: Late Cambrian
Name: Phyllite
Role: Host
Age Type: Host Rock
Age Young: Late Cambrian
Analytical Data
Analytical Data: SAMPLE 2305, A GRAB SAMPLE OF VEIN MATERIAL AND ALTERED WALLROCK CONTAINS 15% FE, 0.5% MG, 0.3% CA, 0.2% TI, +5000 PPM MN, 150 PPM AG, 5000 PPM AS, 700 PPM B, 500 PPM BA, 1 PPM BE, 50 PPM CD, 70 PPM CO, 1000 PPM CR, 150 PPM CU, 15 PPM MO, 150 PPM NI, +20000 PPM PB, 500 PPM SB, 20 PPM SN, 200 PPM V, 30 PPM Y, 3000 PPM ZN, 150 PPM ZR.
Materials
Ore: Gold
Gangue: Sericite
Gangue: Quartz
Comments
Comment (Location): 1.5 KM DUE NORTH OF ADELAIDE SITE ON TOPO. . INFO FROM LAND.ST :(1972)
Comment (Development): NO ACTIVITY IN 1984, BUT A ROTARY DRILL HOLE 100M SW WAS PROBABLY DRILLED WITHIN THE LAST FEW YEARS.
Comment (Deposit): IRON OXIDE MINERALS OCCUR IN QUARTZ VEIN MATTER AND SILICIFIED ROCK ALONG A FAULT ZONE CUTTING OLIVE PHYLLITE, WORKINGS ARE QUITE SHALLOW, ENTIRELY IN THE OXIDIZED ZONE. STOPING WAS DONE ALONG THE FAULT, UP TO 1 M WIDE. BRECCIATION FOR SEVERAL METERS AWAY FROM THE FAULT IS COMMON. VEIN QUARTZ IS SPOTTY, OFTEN CRUSHED. SERICITE (GREEN) OR ILLITE OCCURS IN THE CRUSHED PHYLLITE IN THE CENTRAL PART OF THE FAULT ZONE. THE WORKINGS EXAMINED HERE ARE ALONG A NORTH-TRENDING LINE OF PITS, ADITS, AND SHAFTS EXTENDING FOR OVER 1.5 KM N-S. EXAMINATION OF PITS TO THE SOUTH INDICATES THAT THIS THRUST FAULT CONTINUES AND IS THE MINERALIZED STRUCTURE AT THE INCLINED SHAFTS IN N W 4 SEC 18, T 34 N, R 40 E. THE STRUCTURE PROBABLY ALSO CONTINUES TO THE NORTH ALONG THE LINE OF WORKINGS IN W 2, SEC 7, T 34 N, R 40 E. THE MORE EXTENSIVE WORKINGS ARE IN NW 4, SEC 18.
Comment (Workings): PITS AND SHALLOW INCLINED STOPES, DRILL HOLE
References
Reference (Deposit): GARSIDE, L.J., 1984, NBMG SAMPLE SITE 2305, FIELD EXAMINATION 22 JUN84, AND SAMPLE ANALYSIS
Reference (Deposit): WILLDEN, R., 1964, NBMG BULL 59.
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.
