NBMG Sample Sites 1761 and 1762

The NBMG Sample Sites 1761 and 1762 is a lead, zinc, silver, and copper mine located in Lincoln county, Nevada at an elevation of 6,401 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

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Site Name

Primary: NBMG Sample Sites 1761 and 1762
Secondary: New Freiberg Project Part

Commodity

Primary: Lead
Primary: Zinc
Primary: Silver
Primary: Copper
Tertiary: Barium-Barite

Location

State: Nevada
County: Lincoln
District: Freiberg (Worthing Ton) 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: Beam, T. And Manfras, B.
Years: 1983 -

Production

Not available

Deposit

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

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Form: TABULAR

Structure

Type: R
Description: Thrust Faults

Type: L
Description: Faults, Fractures

Alterations

Alteration Type: L
Alteration Text: Bleaching, Silicification

Rocks

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

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

Analytical Data

Analytical Data: SAMPLES 1761 AND 1762 CONTAINED 10 AND 3% FE, 500 AND 20 PPM MN, 100 AND 1 PPM AG, GREATER THAN 10,000 AND 500 PPM AS, NO AU, 100 AND 300 PPM BA, GREATER THAN 20000 PPM AND 200 PPM CU, GREATER THAN 20000 AND 150 PPM PB, 1500 AND 0 PPM SB, GREATER THAN 10000 AND 500 PPM ZN.

Materials

Ore: Anglesite
Ore: Barite
Ore: Malachite
Gangue: Calcite
Gangue: Pyrite

Comments

Comment (Location): UNSURVEYED, SOUTHERNMOST WORKINGS IN FREIBERG DISTRICT ; INFO FROM LAND.ST :1972; 1:250000 QUADRANGLE INFORMATION IS A 1954 MAP

Comment (Deposit): ANGLESITE OR SCORODITE. SAMPLE 1762 IS FROM THE JASPEROID OUTCROP ADJACENT TO MAIN SHAFT. IT IS HEAVILY STAINED BY FE AND MN OXIDES.

Comment (Workings): SEVERAL SHAFTS (INCLINED STEEPLY TO THE WEST) AND SHALLOW PROSPECTS ARE LOCATED IN AREA RECENTLY REDEVELOPED BY EXTENSIVE EXPLORATORY DRILLING. DRILL ROADS CONTOUR AROUND SLOPES NEAR WORKINGS AND EXTEND FOR SEVERAL MILES TO NORTH ALONG EASTERN RANGE-FRONT. NEAR WORKINGS, DRILL HOLES ARE SPACED AT 10-20 FT INTERVALS. REMAINS OF AN OLD AG SMELTER LOCATED AT THE SITE. DUMPS HAVE BEEN BULLDOZED AND TRENCHED.

Comment (Deposit): 2 PROMINENT RIBS OF JASPEROID OUTCROP ADJACENT TO SHAFTS. OUTCROPS ARE FRACTURED, BRECCIATED AND CONTAIN IRON OXIDE BOX WORKS AND GOSSANY VUGS. A FEW OXIDIZED PYRITE "GHOSTS" NOTED IN OUTCROP. MAIN JASPEROID OUTCROP. MAIN JASPEROID OUTCROP STRKIES N10-20E DIPS 70-75 NW. JASPEROID RUBBLE INDICATES THAT IT EXTENDS NORTH SEVERAL 10'S OF FT. JASPEROID BODY SHOWS FRACTURE PLANES DEVELOPED PARALLEL TO THE TREND OF THE OUTCROP. THE BODY OBVIOUSLY MARKS THE TRACE OF A SILICIFIED, MINERALIZED (?) FAULT ZONE WITHIN THE LIMESTONE. AN ALTERED DIKE INTRUDES THE JASPEROID ZONE NEARBY TO THE SOUTH. SAMPLE 1761 CONSISTS OF CALCITE-CEMENTED LIMESTONE BRECCIA WITH GOSSANY(FE AND MN) PORTIONS AND CONTAINING PYRITE, CERUSSITE, AND MALACHITE ASLENSES, CLOTS AND FRACTURE COATINGS. COARSE CALCITE VEIN ON DUMP CONTAINS A FAIR AMOUNT OF PARTIALLY OXIDIZED PYRITE, ALSO. THE ROCKS ARE HEAVY AND MAY CONTAIN BARITE. SCATTERED GREEN MINERALS (COATINGS) ARE POSSIBLY

Comment (Development): NO ACTIVITY AT TIME OF EXAMINATION IN 1983, BUT AREA WAS STAKED AND HAD BEEN DRILLED IN PAST 3-5 YEARS

References

Reference (Deposit): TSCHANZ AND PAMPEYAN, 1970, NBMG BULL 73, P. 172

Reference (Deposit): BENTZ, J. AND SMITH, P., 1983, FIELD EXAMINATION REPORT, OCT.7, 1983

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.