Mcadoo Mine

The Mcadoo Mine is a mercury mine located in Humboldt county, Nevada at an elevation of 5,000 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: Mcadoo Mine
Secondary: Bluebird Mine

Commodity

Primary: Mercury

Location

State: Nevada
County: Humboldt
District: Bottle Creek 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: Surface/Underground

Ownership

Owner Name: W. M. Overholser
Years: 1943 -

Owner Name: Minney, A.
Years: 1954 -

Production

Year: 1942
Time Period: To 1942
Material type: HG
Description: Cp_Grade: ^Ore Averaged 40 To 60 Lbs. Hg/Ton

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1939
Discovery Year: 1936
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S

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: Hot-spring Hg

Orebody

Form: TABULAR

Structure

Type: R
Description: Steep, North-Trending Fault

Type: L
Description: Faults Cut Dike; Shears Along Dike Contacts

Alterations

Alteration Type: L
Alteration Text: Ore Is Oxidized

Rocks

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

Name: Diabase
Role: Associated
Age Type: Associated Rock Unit
Age Young: Pliocene

Name: Diabase
Role: Associated
Age Type: Host Rock Unit
Age Young: Pliocene

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

Analytical Data

Analytical Data: ORE RAN 40 TO 60 LB HG PER TON. YIELD OF 88 LB HG PER FT OF WORKINGS. 6 - 15 LB ORE. SAMPLE 2438 OF BASIC DIKE MATERIAL CONTAINS 2 % FE,0.2 % MG, 0.07 % CA, 0.2 % TI, 50 PPM MN, 0.7 PPM AG, 1000 PPM- AS, 70 PPM B, 1000 PPM BA, 2 PPM BE, 50 PPM CR, 50 PPM CU, 7 -PPM NI, 10 PPM SC, 100 PPM V, 15 PPM Y, 100 PPM ZR.

Materials

Ore: Cinnabar
Gangue: Iron
Gangue: Calcite

Comments

Comment (Workings): SHAFT, DRIFTS, STOPES. CURRENTLY THERE ARE 3 TRENCHES WHICH RUN E-W UP THE HILL. THEY ARE EACH ABOUT 200 FT LONG BY 15 FT WIDE BY 20 FT- DEEP. A DOZER CUT ROAD RUNS ACROSS UPPER AREA OF TRENCHES. LO-OKS LIKE NONE OF THE TRENCHES HIT BEDROCK, ALTHOUGH TRENCHES A-RE SOMEWHAT SLOUGHED IN. AN OPEN CUT LIES TO NORTH OF NORTHERN-MOST TRENCH-NO BEDROCK EXPOSED IN IT. BETWEEN THIS PROPERTY A -ND RED ORE #1 ARE NUMEROUS CUTS AND TRENCHES, MINOR ADITS. SUR-FACE WORK DONE PROBABLY IN LATE 1960'S - EARLY 1970'S. OPEN SH-AFT APPROXIMATELY 40 FT DEEP LOCATED BELOW TRENCHES AND TO THE- IMMEDIATE NORTH. A SHALLOW TRENCH LIES NORTH OF SHAFT.

Comment (Geology): THE "ROLL" OF THE DIKE, FOLLOWING BEDDING AND FRACTURES IN SED. ROCKS, CONTROLLED FRACTURING OF DIABASE. NUMEROUS FRAGMENTS OF BASIC DIKE ON DUMP.

Comment (Location): CENTER OF DISTRICT, ADJOINS BLUE CAN MINE TO SOUTH.; PREVIOUS QUAD DESIGNATION = BOTTLE CREEK (1961) 1:625000

Comment (Development): 30 TON HERRESHOFF (1940), SMALL ROTARY FURNACE (1943)

Comment (Deposit): ORE DEPOSITION OCCURS IN THE EASTERN DIABASE DIKE AND IN WALL ROCK

Comment (Deposit): DISCOVERY WAS MADE BY DR. W.C. MCADOO IN 1936. THE LESSEE, FULTON QUICKSILVER CO., DID LITTLE WORK ON IT THROUGH 1938. IN 1939, BALDWIN & MCADOO INSTALLED 8 PIPES OF A RETORT AND RECOVERED 161 FLASKS HG. IN 1940, USING A 30-TON HERRESHOFF FURNACE, THEY RECOVERED 838 FLASKS, AND 629 FLASKS IN 1941. THE PROPERTY WAS CLOSED DOWN FROM 1942 TO 1943, WHEN A SMALL ROTARY FURNACE WAS USED TO TREAT ORE SORTED FROM DUMPS. NEW LESSEES IN 1943 BEGAN A DRILLING PROGRAM THE MINE IS DEVELOPED BY A 107-FT SHAFT, AND 1300 FT OF DRIFTS AND STOPES ON SEVERAL LEVELS THE PROPERTY WAS LEASED TO A. MINNEY IN 1952, WHO DID CONSIDERABLE NEW DEVELOPMENT WORK AND INSTALLED A 2-TUBE RETORT IN 1954 TO TREAT 25 LB/TON ORE. DEVELOPMENT CONSISTS OF A 107-FT. INCLINED SHAFT WITH ABOUT 1300 FT. OF UNDERGROUND WORKINGS ; INFO.SRC : 1 PUB LIT; 3 FIELD OBSERV

References

Reference (Production): BAILEY, E.H., AND PHOENIX, D.A., 1944.

Reference (Deposit): ROBERTS, R.J., 1940, QUICKSILVER DEPOSITS OF THE BOTTLE CREEK DISTRICT, HUMBOLDT CO. NEV; U.S.G.S. BULL. 922-A.

Reference (Deposit): BAILEY, E.H., AND PHOENIX, D.A., 1944, QUICKSILVER DEPOSITS IN NEVADA; NEV. BUREAU MINES BULL. 41.

Reference (Deposit): WILLDEN, R., 1964, GEOLOGY AND MINERAL DEPOSITS OF HUMBOLDT CO., NEV; NEV. BUREAU OF MINES BULL. 59.

Reference (Deposit): BENSON, W.T., 1956, INVESTIGATIONS OF MERCURY DEPOSITS IN NEVADA AND IN MALHEUR CO., ORE,: U.S.B.M. REPT OF INV. 5285.

Reference (Deposit): JONES, R. B., 1984, NBMG FIELD EXAMINATION, 9-14-84.

Reference (Deposit): 1952 DIREXPL DMEA , FOUND FAVORABLE OR

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.