Culverwell Adit

The Culverwell Adit is a copper, tungsten, gold, and silver mine located in Lincoln county, Nevada at an elevation of 5,850 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: Culverwell Adit
Secondary: Upper and Lower Independence Adits
Secondary: NBMG Sample Location 1707
Secondary: Part of Tom Johnston Property

Commodity

Primary: Copper
Primary: Tungsten
Primary: Gold
Primary: Silver
Secondary: Iron

Location

State: Nevada
County: Lincoln
District: Pennsylvania 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: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

Not available

Mineral Deposit Model

Model Name: Skarn Cu

Orebody

Form: LENSES, VEINS, PODS

Structure

Type: L
Description: Fractures, Faults

Alterations

Alteration Type: L
Alteration Text: Silication, Marbelization, Chloritization

Rocks

Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Late Cambrian

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene

Analytical Data

Analytical Data: SAMPLES TAKEN IN 1943 BY DMEA RAN 0.03-0.46 OZ/+AU, 1.0-5.19 OZ/+AG, TR-0.081% CU.

Materials

Ore: Chalcopyrite
Ore: Magnetite
Gangue: Pyrite
Gangue: Epidote
Gangue: Calcite
Gangue: Chlorite

Comments

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

Comment (Development): NO ACTIVITY AT TIME OF EXAMINATION IN 1983, BUT TRENCHING WAS PROBABLY DONE IN PAST 5 YEARS OR SO.

Comment (Deposit): THE SHAFT IS INCLINED ALONG AN IRON-STAINED, SILICIFIED, GOSSAN REPLACEMENT ZONE. MINERALIZED DUMP ROCK IS RED-BLACK, VERY DENSE AND COMPOSED ALMOST WHOLLY OF MAGNETITE. MAGNETITE ALSO OCCURS IN CALCITE-VEINED TACTITE AND AS REPLACEMENT PODS IN THE LIMESTONE. LIMESTONE WASTE ROCK SHOWS VARIOUS TYPES OF ALTERATION INCLUDING SILICATION, MARBELIZATION, AND REPLACEMENT OR STAINING BY IRON-OXIDES (GOSSAN). SAMPLE 1707 IS OF REPLACED LIMESTONE COLLECTED FROM BULLDOZER TRENCH IN DRAINAGE BELOW ADIT. THE ROCK IS BANDED, VERY DENSE, AND CONTAINS LENSES AND VEINS OF CALCITE AND OXIDIZED PODS AND CRYSTALS OF MAGNETITE, COPPER OXIDES, PYRITE, AND CHALCOPYRITE. THE SAMPLE WAS LAMPED AND ONLY TWO VERY FINE SPECKS OF SCHEELITE WERE OBSERVED. ROCKS EXPOSED IN BULLDOZED TRENCH CONSISTS OF A SEQUENCE OF WHITE MEDIUM-COARSELY CRYSTALLINE MARBLE, EPIDOTIZED MONZONITE-DIORITE INTRUSIVE ROCK AND BANDED, LIGHT AND DARK GREEN TACTITE. CONTACT OF INTRUSIVE WITH LIMESTONE IS NOT WELL-EXPOSED, BUT ORIENTATION

Comment (Deposit): IS PROBABLY NE-SW. WEATHERED, CHLORITICALLY ALTERED INTRUSIVE OUTCROPS AT BOTTOM OF TRENCH JUST NW OF ADIT. THE ROCK HAS FE-STAINED FRACTURES AND CARRIES A SMALL AMOUNT OF OXIDIZED PYRITE. SILICATED

Comment (Workings): S30E-TRENDING ADIT RECENTLY DEMOLISHED BY TRENCHING AND SCRAPING IN DRAINAGE AREA. REMAINS OF TRACK NEAR PORTAL. PROSPECT ABOVE ADIT IS A CAVED SHAFT INCLINED ABOUT 40 NE.

References

Reference (Deposit): BENTZ, J. AND SMITH, P; 1983, FIELD EXAMINATION REPORT, SEPT. 13, 1983.

Reference (Deposit): NBMG DISTRICT FILES, REPORT ON TO M JOHNSTON PROPERTY

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.