Culverwell Mine

The Culverwell Mine is a gold and silver 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: Culverwell Mine
Secondary: History Repeats Claims
Secondary: Del Claims
Secondary: NBMG Sample Locations 1756, 1757.

Commodity

Primary: Gold
Primary: Silver

Location

State: Nevada
County: Lincoln
District: Delamar (Ferguson) District 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: Willard Pete, Et Al., Box 483, Caliente, Nv. ; And Tim Watt, 1906 Wilt Road, Fallbr
Years: 1974 -

Production

Year: 1932
Material type: ORE
Description: Ap_Grade: ^1.44 Oz Au, 2.31 Oz Ag/Ton

Deposit

Record Type: Site
Operation Category: Producer
Deposit Type: Vein
Operation Type: Unknown
Year First Production: 1933
Discovery Year: 1932
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

Not available

Mineral Deposit Model

Model Name: Epithermal vein, Comstock

Orebody

Form: TABULAR

Form: TABULAR

Structure

Type: R
Description: Abundant Normal Faults

Alterations

Not available

Rocks

Name: Plutonic Rock
Role: Associated
Age Type: Host Rock
Age Young: Early Cambrian

Analytical Data

Analytical Data: 5 TONS ORE CONTAINED 1.44 OZ/T AU AND 2.31 OZ/T AG. SAMPLES 1756 AND 1757 CONTAIN, RESPECTIVELY, 200 AND 300 PPM MN, 7 AND 5 PPM AG, 150 AND 100 PPM AS, 20 PPM PB, 30 AND 10 PPM Y, 200 AND 0 PPM ZN, 100 AND 200 PPM ZR.

Materials

Ore: Gold
Gangue: Sericite
Gangue: Chlorite
Gangue: Pyrite

Comments

Comment (Deposit): COARSE WHITE AND GREY CALCITE, QUARTZ AFTER CALCITE, BANDED CHALCEDONIC QUARTZ AND MANGANOSIDERITE ARE COMMONLY FOUND AS GANGUE VEIN MINERALS ON THE DUMP. CROSSCUTTING BRECCIA VEINS AND SPLAYED BANDED VEINS INDICATE SPLITTING OF LAMINATED HOST DURING VEIN EMPLACEMENT AND SUCCESSIVE VEINING AND BRECCIATION OF THE HOST ROCK. MN OXIDES COAT QUARTZ MATERIAL AND PYRITE AND BARITE WERE OBSERVED AS MINOR CONSTITUENTS OF THE QUARTZ AND CALCITE VEIN. THE UPPER CAVED SHAFT (NOT SHOWN ON TOPO MAP) EXPOSED A N45W VERTICAL OR STEEPLY SW-DIPPING BANDED QUARTZ/CALCITE VEIN ABOUT 3-4 FT WIDE. THE VEIN IS BRECCIATED AND FRACTURED AND INTRUDES RED-BROWN DIRTY QUARTZITES AND SANDSTONES.

Comment (Geology): ORE FOUND IN 2 CONVERGING VEINS STRIKING S 40 E AND S 50 E. THE WIDTH OF THE MAIN VEIN IS 2 FEET, DIPPING 74-88 DEG SW. VEIN MATERIAL IS LEACHED NEAR THE SURFACE, CONTAINING QUARTZ WITH MANGANESE AND IRON OXIDES. SOME SPECIMENS OF VISIBLE WIRE GOLD ON QUARTZ WERE OBTAINED.

Comment (Workings): VEINS EXPLORED BY A SHORT TUNNEL AND SEVERAL PITS A WINZE WAS NOTED IN THE TUNNEL AS WELL AS A 60-FT CROSSCUT TRENDING S16W, AND A DRIFT ON THE VEIN FOR 53 FT S50-62E. AN OPEN CUT IS CONNECTED TO THE DRIFT BY A RAISE. IN 1983, THERE WERE SEVERAL S-TRENDING ADITS MOSTLY OPEN WITH LARGE DUMPS, ONE CAVED SHAFT AND ADIT ABOVE AND SW OF UPPER SAMPLED ADIT. ROAD TO WORKINGS HAD BEEN RECENTLY BLADED.A WINZE WAS NOTED IN THE TUNNEL AS WELL AS A 60-FT CROSSCUT TRENDING S16W, AND A DRIFT ON THE VEIN FOR 53 FT S50-62E. AN OPEN CUT IS CONNECTED TO THE DRIFT BY A RAISE. IN 1983, THERE WERE SEVERAL S-TRENDING ADITS MOSTLY OPEN WITH LARGE DUMPS, ONE CAVED SHAFT AND ADIT ABOVE AND SW OF UPPER SAMPLED ADIT. ROAD TO WORKINGS HAD BEEN RECENTLY BLADED.

Comment (Development): FIRST DISCOVERY IN THE DISTRICT WAS MADE NEARBY IN MONKEY WRENCH WASH. SOME SURFACE EXPLORATION DONE IN AREA PROBABLY IN EARLY 1980'S. CABIN BELOW WORKINGS LOOKS "LIVED IN". DUMP MATERIAL IS SORTED, AND THERE ARE A GENERATOR AND MINING EQUIPMENT ON PROPERTY. MINE IS PROBABLY WORKED INTERMITTENTLY ON A SMALL SCALE (1983).

Comment (Location): AREA UNSURVEYED

Comment (Commodity): ORE MINERALS NOT GIVEN IN THE REFERENCE

Comment (Deposit): DUMP IS COMPOSED OF SILICIFIED QUARTZITE CUT BY A RANDOM NETWORK OF WHITE TO VITREOUS GREY QUARTZ VEINS. SOME VEINS ARE BANDED, OPEN-CENTERED AND ENCLOSE BRECCIA FRAGMENTS OF QUARTZITE AND MONZONITE PORPHYRY INTRUSIVE (?) ROCK. THE FRAGMENTS OF QUARTZITE AND INTRUSIVE ARE ALTERED AND IRON STAINED.PYRITE AND CLOTS OF MN OXIDES ARE CONTAINED IN THE VEIN MATERIAL. QUARTZITE FRAGMENTS IN THE BRECCIA HAVE DEVELOPED SERICITE AND CHLORITE IN RESPONSE TO METAMORPHISM AND COMMONLY CONTAIN FINELY DISSEMINATED PYRITE. UPPER ADIT BEGINS IN AN OUTCROP OF QUARTZITE AND DIRTY QUARTZITE BEDS 1-3 FT WIDE, STRIKING N40W, DIP 55SW. IN GENERAL THE ROCKS ARE MORE POORLY SORTED WITH A HIGHER MATRIX CONTENT THAN USUAL IN THE PROSPECT MTN QUARTZITE. MOST OF THE DUMP CONSISTS OF QUARTZ-CEMENTED QUARTZITE, RED AND BROWN SANDSTONE AND SILTSTONE BRECCIA. THE BRECCIA FRAGMENTS ARE TYPICALLY CEMENTED BY VUGGY BANDED QUARTZ WITH PRISMATIC TERMINATED QUARTZ CRYSTALS FILLING CENTRAL CAVITIES BETWEEN FRAGMENTS. ALSO

References

Reference (Deposit): CALLAGHAN, E., 1937, GEOLOGY OF THE DELAMAR DISTRICT, LINCOLN CO, NEV. NEV BUR MINES V 31 NO. 5 P. 68-69

Reference (Deposit): TSCHANZ, C.M., AND PAMPEYAN, E.H., 1970, GEOLOGY AND MINERAL DEPOSITS OF LINCOLN CO, NEV., NEV. BUR MINES BULL 73, P. 171.

Reference (Deposit): BENTZ, J. AND SMITH, P., 1983, FIELD EXAMINATION REPORT, OCT 2, 1983.

Reference (Production): CALLAGHAN, 1937

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.