Black Forest Mine

Past Producer in Elko county in Nevada, United States with commodities Lead, Silver, Copper, Zinc

Geologic information

Identification information

Deposit ID 10046051
MRDS ID M233961
Record type Site
Current site name Black Forest Mine
Alternate or previous names Signal, Forest Cave, Atlantic, Index, Snowbank Fraction, Rescue, Windy Point, Long Green, Last Chance, Keystone, Anaconda, Empire.

Geographic coordinates

Geographic coordinates: -114.81144, 40.56714 (WGS84)
Elevation 2591
Relative position N SLOPE OF SPRUCE MT.
(click for info)

Geographic areas

Country State County
United States Nevada Elko

Public Land Survey System information

Meridian Township Range Section Fraction State
031N 063E 13 Nevada

Comments on the location information

  • E OF PASS

Commodities

Commodity Importance
Lead Primary
Silver Primary
Copper Secondary
Zinc Secondary

Materials information

Materials Type of material
Copper Ore
Galena Ore
Lead Ore
Pyrite Ore
Actinolite Gangue
Chlorite Gangue
Kaolin Gangue
Limonite Gangue

Alteration

  • (Local) Sericitization-Kaolinization

Mineral occurrence model information

Model code 72
USGS model code 19a
Deposit model name Polymetallic replacement
Mark3 model number 47

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Late Permian
    Stratigraphic age (youngest) Late Permian
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -114.81144, 40.56714

Geologic structures

Type of structure Local
Structure description Thrust Fault, Major N-S Fault

Ore body information

  • General form TABULAR, PIPE-LIKE

Controls for ore emplacement

  • Faults, Shear Zone, Bedding Planes

Comments on the geologic information

  • LAMPROPHYRIC DIKE IN UPPER TUNNEL SOME WHAT ALTERED

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1872
Year of first production 1872

Mining district

District name Spruce Mountain

Comments on the production information

  • NETSMELTER RETURNS, 1919-1928 WERE $608,500: ON 30,000 TONS ORE ORE PAN 20% PB, 20 OZ/TON AG TOTAL PRODUCTION OVER $1,000,000 WORTH. ORE INCLUDED SOME COPPER

Workings at the site

  • Type of workings Surface/Underground
    Length 3048M

Comments on the workings information

  • PRIFTS, TUNNELS, STOPES; THE BLACK FOREST-BRONCO TUNNEL (2700 FT. LONG)

Comments on development

  • FIRST WORKED IN THE EARLY 1870'S, AND INTERMITTENTLY THEREAFTER. PRIOR TO 1910, CONSIDERABLE ORE WAS MINED AND SMELTED ON THE PROPERTY. IN FEB., 1916, THE BLACK FOREST MINING AND SMELTING CO. WAS INCORPORATED, AND REINCORPORATED IN 1928. FURTHER CONSOLIDATION IN 1929 LED TO THE FORMATION OF THE MISSOURI MONARCH CONSOLIDATED MINES CO., WHICH OPERATED CONTINUOUSLY THROUGH 1937

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS M233961

Bibliographic references

  • Deposit

    SCHRADER, F.C., 1931, SPRUCE MOUNTAIN DISTRICT, ELKO COUNTY, U OF N BULL, VOL. XXV, NO. 7

  • Deposit

    HILL, JAMES M., 1916, NOTES ON SOME MINING DISTRICTS IN EASTERN NEVADA, USGS BULL 648

  • Deposit

    MINES REQUESTER 1937

  • Deposit

    WILSON, C.L., 1937, THE GEOLOGY OF THE BLACK FOREST MINE AREA, SPRUCE MOUNTAIN, NEVADA, THESIS U. OF ARIZONA

  • Deposit

    NEVADA BUREAU OF MINES FILES #77

General comments

Subject category Comment text
Deposit SERIES OF INTERLACING PIPES OR CHIMNEYS OR CHAMBERS: REPLACEMENT ORE BODIES ALONG FAULTS & FISSURES
Deposit THE BLACK FOREST MINE WAS FIRST WORKED IN THE EARLY 1870'S, AND INTERMITTENTLY THEREAFTER. IN 1904 THE SMELTER AT JASPAR OF THE BLACK FOREST SMELTING. AND REFINING CO. TURN OUT 700 BARS OF BULLION AS PRODUCTION CONTINUED. WILSON (1937) REPORTED THAT PRIOR TO 1910 CONSIDERABLE ORE FROM THE BLACK FOREST MINE WAS MINED AND SMELTED ON THE PROPERTY. IN FEBRUARY 1916 THE BLACK FOREST MINING AND SMELTING CO WAS INCORPORATED, AND RE-INCORPORATED IN 1928 TO OPERATE THE BLACK FOREST MINE. IN 1929 THE BIG 4 AND KEYSTONE CLAIMS WERE ADDED TO THEIR PROPERTY HOLDINGS A LONG WITH AND AFTER THE CONSOLIDATION WITH THE MONARCH MINE WHICH WAS EFFECTED IN 1928. THE NEW COMPANY WAS KNOWN AS THE MISSOURI MONARCH CONSOLIDATED MINES COMPANY AND OPERATED CONTINUOUSLY THROUGH 1937. PRODUCTION RECORDS ARE SCANTY, BUT SMELTER RETURNS ON 30,000 TONS MINED FROM THE BLACK FOREST FROM 1919 TO 1928 HAD A NET RETURN OF $608,500. MOST OF THE OXIDIZED LEAD-SILVER ORE ABOVE THE 150 FT LEVEL CAME FROM A SERIES OF
Deposit INTERLACING PIPES OR CHIMNEYS AND CHAMBERS IN WHITE 1.S. THIS ORE WAS SHIPPED AT THIS TIME (PRE1928) TO A.S. & R. CO. AT MURRAY, UTAH. THE MINE PRE 1937 OPENED BY 5-6 ADITS AND OVER 7000 FT OF WORKINGS WITH DRIFTS, RAISES, STOPES ETC..THE BLACK F OREST-BRONCO TUNNEL IS 2,700 FT AND SERVED FOR ORE HAULAGE, MINING, AND ACCESS; WITH ITS COMPLETION SOMETIME BEFORE 1937. THE ORE OCCURS A LONG NW FAULT FISSURES, AS REPLACEMENT ORE BODIES IN LIMESTONE (FAVORABLE), AS CHIMNEYS, PIPES AND GLOBULAR BODIES 3 FT OR MORE IN DIAMETER IN CLOSED IN FERRUGINOUS CASINGS. THE MINE IS WORKED FROM 8 LEVELS WITH OVER 10,000 FT OF WORKINGS; MANY STOPES ARE DEVELOPED ON MAJOR MINERALIZED FISSURES. THE ORE IS A FINE-GRAINED MIXTURE OF LEAD AND COPPER CARBONATES AND OXIDES WITH 20% LEAD AND 20 OZ. OF SILVER PER TON. SULFIDES BEGIN TO APPEAR IN THE DEEPEST WORKINGS OF THE MINE. MINERAL SURVEY 4680, CONSISTING OF BLACK FOREST, SIGNAL, FOREST, CAVE, ATLANTIC, INDEX, SNOWBANK, FRACTION, RESCUE, WINDY POINT,
Deposit LONG GREEN, LAST CHANCE, KEYSTONE, ANACONDA, EMPIRE CLAIMS. ; INFO.SRC : 1 PUB LIT
Deposit Discovery Year: EARLY 1870'S

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1979 Tingley, J.V. Nevada Bureau of Mines and Geology