Ashdown Mine

The Ashdown Mine is a silver and gold mine located in Humboldt county, Nevada at an elevation of 4,701 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: Ashdown Mine
Secondary: Curley Luck Gold Property
Secondary: NBMG Sample Sites 2975,2976, 2977

Commodity

Primary: Silver
Primary: Gold
Secondary: Molybdenum
Secondary: Copper
Tertiary: Lead
Tertiary: Mercury

Location

State: Nevada
County: Humboldt
District: Warm Springs 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

Type: Underground

Ownership

Owner Name: American Copper And Nickel Co. Bought It From The Cannon Family.

Owner Name: Nevada Mineral Development, Inc.
Years: 1980 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Producer
Deposit Type: Vein
Operation Type: Unknown
Year First Production: 1865
Discovery Year: 1863
Years of Production:
Organization:
Significant: N

Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Great Basin
Physiographic Detail: Basin And Mountains

Mineral Deposit Model

Model Name: Low-sulfide Au-quartz vein

Orebody

Form: TABULAR

Structure

Not available

Alterations

Not available

Rocks

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

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

Analytical Data

Analytical Data: SAMPLE 2977 CONTAINS 0.3 % FE, 0.02 % MG, 30 PPM MN, 3 PPM AG, 700 PPM AS, 30 PPM BA, 1 PPM SB, AND 0.1 PPM AU, BY AA ANALYSIS. ORE CARRIES 100:1, AG:AU RATIO. SAMPLE 2607 OF VEIN QUARTZ WITH SULFIDES CONTAINS 5 % FE, 0.05 % MG, 0.1 % TI, 15 PPM MN, 1500 PPM AG, +10000 PPM AS, 20 PPM AU, 100 PPM B, 70 PPM BA, 1 PPM BE, 30 PPM BI, 10 PPM CR, 200 PPM CU, 10 PPM NI, 700 PPM PB, 100 PPM SB, 20 PPM V, 100 PPM ZR, AND 54 PPM AU, BY AA ANALYSIS. SAMPLE 2608 OF VEIN QUARTZ WITH ARSENOPYRITE CONTAINS 10 % FE, 0.02 % MG, 0.05 % TI, 50 PPM MN, 1000 PPM AG, +10000 PPM AS, 50 PPM B, 20 PPM BA, 50 PPM BI, 10 PPM CO, 10 PPM CR, 5000 PPM CU, 7 PPM NI, 3000 PPM PB, 300 PPM SB, 10 PPM V, 300 PPM ZN, AND 11.0 PPM AU, BY AA ANALYSIS
Analytical Data: AVG. GRADE APPROX 0.313 OZ AU/TON. A 1967 REPORTS VALUES FOR 30 SAMPLES AS FOLLOWS: 0.03 TO 1.68 OZ/TON AU, 3 TO 1.04 OZ/TON AG, 0 TO 0.38 % CU. TRACE TO 0.14 % MO. SAMPLE 2975 CONTAINS 0.5 % FE, 0.07 % MG, 0.05 % CA, 0.2 % TI, 300 PPM MN, 20 PPM B, 500 PPM BA, 1.5 PPM BE, 15 PPM BI, 10 PPM CR, 1500 PPM CU, +2000 PPM MO, 5 PPM NI, 20 PPM V, AND 30 PPM ZR. SAMPLE 2976 CONTAINS 2 % FE, 0.03 % MG, 0.15 % CA, 0.02 % TI, 200 PPM MN, 2 PPM AG, 2000 PPM AS, 15 PPM B, 150 PPM BA, 1 PPM BE, 500 PPM BI, 10 PPM CR, 1000 PPM CU, 50 PPM MO, 10 PPM PB, 700 PPM SB, 20 PPM V, 50 PPM W, 10 PPM ZR, AND 3.2 PPM AU, BY AA ANALYSIS.

Materials

Ore: Chalcopyrite
Ore: Chalcocite
Ore: Tetrahedrite
Ore: Cinnabar
Ore: Pyrite
Ore: Galena
Ore: Copper
Ore: Molybdenite
Ore: Mercury

Comments

Comment (Deposit): OWNED IN THE 1960'S BY VERN CANNON. MOST OF THE PRODUCTION IN THIS DISTRICT HAS COME FROM THIS MINE. THE FIRST CLAIMS WERE LOCATED IN THE AREA IN 1863. EARLY MINING WAS HINDERED BY ISOLATION AND HOSTILITY OF THE BANNOCK INDIANS. A SMALL MILL ERECTED IN 1864 WAS BURNED BY THE INDIANS IN 1865. THE ASHDOWN IS COMPOSED OF A GROUP OF 16 CLAIMS, OWNED IN THE 1930'S BY C.C. CROW AND LEASED TO G. MATHEWSON. DEVELOPMENT AT THAT TIME CONSISTED OF 10 ADITS (ONE ABOUT 1500 FT LONG) AND OTHER WORKINGS TOTALLING ABOUT 10,500 FT.; IN 1980, THE MINE WAS ACTIVE, AS AN "UNDERGROUND REHABILITATION" PROPERTY, EMPLOYING 3 WORKERS. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; 3 FIELD OBSERV

Comment (Workings): 10 ADITS (UP TO 1500 FT. LONG) AND OTHER UNDERGROUND WORKINGS

Comment (Geology): NARROW, GENTLY DIPPING (LESS THAN 40 DEGREES) QUARTZ VEINS IN GRANODIORITE, STEEPENING DOWNWARD; VEIN WIDTH VARIES FROM 2 TO 10 FT, AVERAGING 5 FT. IN THE FOOTWALL BELOW THE QUARTZ VEIN AT THE 400 FT. LEVEL IS SOME FINELY DISSEMINATED NATIVE COPPER WITH SECONDARY ENRICHMENT OF COPPER IN SEAMS IN GNEISS

Comment (Production): $400,000 WORTH OF AU AND AG PRODUCED BY 1938, AND A REPORT ESTIMATES PROVEN RESERVES OF MORE THAN 135,000 TONS AT $10.45/TON IN AU, IN 1940.

Comment (Development): PROPERTY WAS TEMPORARILY INACTIVE AT TIME OF EXAMINATION IN 1984.

Comment (Location): ACCESSIBLE VIA GOOD IMPROVED ROAD.

Comment (Commodity): IN 1954, 32 TONS ORE WAS REPORTED TO CONTAIN ABOUT 1.0 % WO3, WITH NO OTHER DETAILS ON THE DEPOSIT OR MINERALS. THIS ORE MAY HAVE BEEN MINED AT ANOTHER PROPERTY AND WAS ONLY MILLED AT THE ASHDOWN MILL.

Comment (Deposit): IN PLACES, QUARTZ IS MASSIVE AND IN OTHERS, PEGMATITIC. IN THE WESTERN PART OF THE MINE AREA, AMERICAN DRILLED INTO A MOLYBDENITE OREBODY INTO WHICH A DECLINE WAS SUNK. THE NEW WORKINGS ARE REPORTED TO EXCEED 3000 FT. SAMPLE 2975 FROM MOLY OREBODY MATERIAL, FROM THE TENS OF THOUSANDS OF TONS OF ORE STOCKPILED CURRENTLY IN DUMPS. MINERALIZATION INCLUDES MASSIVE MOLYBDENITE, CHALCOPYRITE, MINOR MERCURY, AND OTHER SULFIDES. SAMPLE 2976 FROM DUMPS SERVING #8 LEVEL IN OLD MINE WORKINGS FURTHER UP THE MOUNTAIN. MINERALIZATION OCCURS IN A BRECCIATED, IRON-STAINED QUARTZ VEIN. SAMPLE 2977 IS OF SULFIDE-BEARING VEIN MATERIAL FROM ONE OF THE LOWER DUMPS.; MODEL NAME COULD ALSO BE: POLYMETALLIC VEINS.

References

Reference (Deposit): WILLDEN, R., 1964, GEOLOGY AND MINERAL DEPOSITS OF HUMBOLDT COUNTY, NEVADA; NBMG, BULL. 59.

Reference (Deposit): VANDERBURG, W.O., 1938, RECONNAISSANCE OF MINING DISTRICTS IN HUMBOLDT COUNTY, NEVADA; UBSM INF. CIRC. 6995

Reference (Deposit): STATE INSPECTOR OF MINES, 1981, DIRECTORY OF NEVADA MINE OPERATIONS ACTIVE DURING CALENDAR YEAR 1980.

Reference (Deposit): GONNASON, W.L., 1967, UNPUBLISHED GEOLOGICAL REPORT ON THE ASHDOWN MINE; ON FILE AT NBMG. #5. QUADE, JACK, 1 OCT 84, NBMG FIELD EXAMINATION AND SAMPLE ANALYSIS. #6. NBMG STAFF, 1985, NBMG OFR 85-3. #7. STAGER, H.K. AND TINGLEY, J.V., IN PREPARATION, NBMG BULL. ON TUNGSTEN DEPOSITS OF NEVADA.

Reference (Deposit): NBMG, 1994, MI-1993

Reference (Reserve-Resource): BONHAM, H.F., 1988 MI-1993

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.