Baldwin Mine

The Baldwin Mine is a mercury mine located in Humboldt county, Nevada at an elevation of 4,902 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: Baldwin Mine
Secondary: Blue Bucket, Blue Bottle Claims
Secondary: NBMG Sample Site 2439

Commodity

Primary: Mercury
Tertiary: Antimony

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: Underground

Ownership

Owner Name: H. W. Baldwin
Years: 1943 -

Owner Name: Molybdenum Products. Co.
Years: 1943 -

Production

Year: 1942
Time Period: To 1942
Material type: HG
Description: Cp_Grade: ^10 Lb/Ton

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1941
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: Major Faults Strike N And Dip Steeply East; Flow-Banding ; Reg.Trends: Nne

Type: L
Description: Ore Lies Between Two Faults: One Nw-Trending Vertical Fault And The Other A Ne-Trending Fault Dipping Steeply Se.

Alterations

Alteration Type: L
Alteration Text: Silicification Of Rhyolite

Rocks

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

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

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

Analytical Data

Analytical Data: ORE RAN AS HIGH AS 20 LB HG PER TON. 12 LB HG PER FT. OF WORKINGS. SAMPLE 2439 CONTAINS 10 % FE, 0.3 % MG, .1 % CA, .5% TI, 1500 PPM MN, 100 PPM B, 500 PPM BA, 30 PPM CO, 50 PPM CR-, 100 PPM CU, 15 PPM NI, 300 PPM SB, 20 PPM SC, 300 PPM V, 20 -PPM Y, 50 PPM ZR.

Materials

Ore: Cinnabar
Gangue: Calcite
Gangue: Chalcedony

Comments

Comment (Deposit): THE PROPERTY WAS DISCOVERED BY H.W. BALDWIN IN 1936. AFTER SEVERAL ABORTIVE ATTEMPTS AT DEVELOPMENT IN THE LATE 190'S, THE PROPERTY WAS LEASED BY MELVIN MCCOY AND JOHN HARDIN IN 1941 WHO DEEPENED THE SHAFT AND RECOVERED 47 FLASKS FROM RETURTS. 94 FLASKS WERE RECOVERED IN 1942. IN 1943, THE PROPERTY WAS OPTIONED BY THE MOLYBDENIM PRODUCTS COMPANY OF TACOMA, WA, WITH NO DEV. OR PRODUCTION THRU 1943 THE PROPERTY LAYIDLE THRU AT LEAST 1956. LARGEST WORKINGS WERE NEAR N. END OF AN 800-FT LONG OUTCROP OF SILICIFIED RHYLOLITE, AND CONSISTS A 76-FT. SHAFT WITH ASSOCIATED UNDERGROUND WORKINGS TOTALLING ABOUT 160 FT. OTHER WORKINGS SOUTH OF THIS INCLUDE A GLORY HOLE, 50 FT ADIT 25-FT SHAFT AND OTHER SHALLOW SURFACE WORKINGS. ; INFO.SRC : 1 PUB LIT; 3 FIELD OBSERV

Comment (Reserve-Resource): RESERVES ARE SMALL

Comment (Development): TWO RETORTS; ORE PROCESSED AT MC ADOO HERRESHOFF FURNACE (1942)

Comment (Deposit): ORE HAD NOT BOTTOMED OUT AS OF 1944. FRACTURE FILLING, VEINLETS, REPLACEMENT. ALL WORKINGS ARE IN RHYOLITE; SILICIFIED AND EXTENSIVELY FE-STAINED THRO-UGHOUT WORKINGS

Comment (Workings): SHAFTS, DRIFTS, GLORY HOLE, PITS. ADIT TRENDS N80W ON NE SIDE OF HALBURG MOUNTAIN, SEVERAL HUNDRED FEET LONG. ABOVE ADIT AND EXTENDING APPROXIMATE-LY HALFWAY UP MOUNTAIN ARE A SERIES OF DOZER CUTS SEVERAL HUND-RED FEET LONG. KNOB TO NORTH OF ADIT HAS 2 DOZER CUTS. CUTS AN-D SMALL PITS ARE IN BOTTOM AND ALONG SIDES OF SMALL RAVINE THA-T TRENDS WEST BETWEEN ADIT AND KNOB TO NORTH. A 2-PIPE RETORT -LIES TO THE EAST OF ADIT ABOUT 200 YDS, IN FAIRLY GOOD SHAPE. -NEW CAT CUTS HAVE WIPED OUT OLDER SHAFTS SHOWN ON TOPO MAP (19-84).

Comment (Geology): ORE HAS NOT BOTTOMED IN WORKINGS (AS OF 1944). MAIN ORE BODY IS 25 FEET IN DIAMETER ; GEOL.DESC: RHYOLITE DIKE CUTS LATE - TERT RHYOLITE FLOW ROCK

Comment (Location): NE SLOPE OF HALBURG MOUNTAIN

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. BULLETIN 922-A.

Reference (Deposit): BAILEY, E.H., AND PHOENIX, D.A., 1944, QUICKSILVER DEPOSITS IN NEVADA; NEV. BUREAU OF 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, INVESTIGATION OF MERCURY DEPOSITS IN NEVADA AND IN MALHEUR CO, ORE; USBM REPT INV 5285

Reference (Deposit): JONES, R. B., 1984, FIELD EXAMINATION 9-15-84

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.