NBMG Sample Site 2421

The NBMG Sample Site 2421 is a lead and silver mine located in Humboldt county, Nevada at an elevation of 4,849 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: NBMG Sample Site 2421

Commodity

Primary: Lead
Primary: Silver
Secondary: Gold
Tertiary: Arsenic

Location

State: Nevada
County: Humboldt
District: Jungo Area

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
Deposit Type: Vein
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

Not available

Mineral Deposit Model

Model Name: Low-sulfide Au-quartz vein

Orebody

Form: IRREGULAR

Structure

Not available

Alterations

Not available

Rocks

Name: Phyllite
Role: Host
Age Type: Host Rock
Age Young: Late Jurassic

Analytical Data

Analytical Data: SAMPLE 2421, DUMP SAMPLE OF FE-STAINED QUARTZ, VUGGY AND BRECCIATED, WITH MINOR AMOUNTS OF GALENA VISIBLE, CONTAINS 3% FE, 0.05% MG, 0.15% CA, 0.005% TI, 70 PPM MN, 200 PPM AG, 2000 PPM AS, 20 PPM B, 100 PPM BA, 20 PPM BI, 50 PPM CD, 10 PPM CR, 100 PPM CU, 20 PPM NI, +20000 PPM PB, 100 PPM SB, 200 PPM ZN, AND ALSO 0.1 PPM AU, BY AA ANALYSIS.

Materials

Ore: Galena
Gangue: Iron
Gangue: Quartz

Comments

Comment (Location): INFO FROM LAND.ST :(1972)

Comment (Development): LOTS OF CLAIM POSTS BUT NO PAPER. CLAIM POSTS FAIRLY NEW.

Comment (Deposit): MASSIVE BLOB OF MILKY WHITE IRON-STAINED QUARTZ IN A PHYLLITE. SIMILAR TO PROSPECT ON EAST SIDE OF RANGE EXCEPT THAT QUARTZ IS IN METASEDIMENTS INSTEAD OF META-INTRUSIVE (DIKE-SILL). SAME PHYLLITE HERE AS ON EAST SIDE OF RANGE. PHYLLITE STRIKES N 30 E, DIP 35 NW. BEDS VERY CONTORTED AND DIP-STRIKE ARE VARIABLE. LIKEWISE, QUARTZ "VEIN" IS HIGHLY CONTORTED. MINOR GALENA SEEN IN QUARTZ ON DUMP. SECOND READING-N 45 E, 34 NW. NO INTRUSIVE IN IMMEDIATE AREA OF WORKINGS, HOWEVER, RIDGE TO NW OF WORKINGS APPEARS TO BE INTRUSIVE ROCK.

Comment (Workings): LARGE REWORKING AREA ON SOUTH SIDE OF GULLEY CONSISTS OF AN OPEN CUT ABOUT 20 FT LONG TRENDING N 10 E AT THE END OF WHICH ARE 2 ADITS SIDE BY SIDE. THE ADIT TO THE SOUTH IS VERY SHORT (ABOUT 20 FT). ADIT TO NORTH IS 50+ FT LONG? WITH A VERTICAL STOPE AT ITS MOUTH MAYBE 30-40 FT DEEP. 2-4 DOZER CUTS ON SLOPE AROUND THESE WORKINGS. LONGER ADIT TRENDS ABOUT N 40 E BUT HAS A BEND TO NW ABOUT 30 FT IN (ON OTHER SIDE OF VERTICAL STOPE). ANOTHER ADIT BELOW THIS ONE, AT BOTTOM OF GULLEY TRENDS S 70 E, PROBABLY JOINS WITH VERTICAL STOPE FROM ABOVE ADIT. WHITE FE-STAINED QUARTZ WITH GALENA ON DUMP. ABOUT 30+ FT VERTICAL DIFFERENCE IN THE TWO WORKINGS.

References

Reference (Deposit): JONES, R.B., 18 AUGUST 84, NBMG FIELD EXAMINATION AND SAMPLE ANALYSIS.

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

Reference (Deposit): WILLDEN, R., 1964, NBMG BULL 59, PL. I.

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.