| 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: | -114.81144, 40.56714 (WGS84) |
|---|---|
| Elevation | 2591 |
| Relative position | N SLOPE OF SPRUCE MT. |
Political divisions (FIPS codes)
Elko(county)
Nevada(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Spruce Mountain(quadrangle 1:24,000 scale)
Wendover(quadrangle 1:100,000 scale)
Elko(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Long-Ruby Valleys(hydrologic unit)
Central Nevada Desert Basins(hydrologic accounting unit)
Central Nevada Desert Basins(hydrologic subregion)
Great Basin(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Nevada | Elko |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| 031N | 063E | 13 | Nevada |
| Commodity | Importance |
|---|---|
| Lead | Primary |
| Silver | Primary |
| Copper | Secondary |
| Zinc Critical | Secondary |
| Materials | Type of material |
|---|---|
| Copper | Ore |
| Galena | Ore |
| Lead | Ore |
| Pyrite | Ore |
| Actinolite | Gangue |
| Chlorite | Gangue |
| Kaolin | Gangue |
| Limonite | Gangue |
| Model code | 72 |
|---|---|
| USGS model code | 19a |
| Deposit model name | Polymetallic replacement |
| Mark3 model number | 47 |
| Host or associated | Associated | ||||
|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Granitoid > Granite | ||||
| |||||
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Carbonate > Limestone |
| (1) | -114.81144, 40.56714 |
|---|
| Type of structure | Local |
|---|---|
| Structure description | Thrust Fault, Major N-S Fault |
| General form | TABULAR, PIPE-LIKE |
|---|
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1872 |
| Year of first production | 1872 |
| District name | Spruce Mountain |
|---|
| Type of workings | Surface/Underground |
|---|---|
| Length | 3048M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | M233961 |
SCHRADER, F.C., 1931, SPRUCE MOUNTAIN DISTRICT, ELKO COUNTY, U OF N BULL, VOL. XXV, NO. 7
HILL, JAMES M., 1916, NOTES ON SOME MINING DISTRICTS IN EASTERN NEVADA, USGS BULL 648
MINES REQUESTER 1937
WILSON, C.L., 1937, THE GEOLOGY OF THE BLACK FOREST MINE AREA, SPRUCE MOUNTAIN, NEVADA, THESIS U. OF ARIZONA
NEVADA BUREAU OF MINES FILES #77
| 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 |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-AUG-1979 | Tingley, J.V. | Nevada Bureau of Mines and Geology |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
These are landing pages for further research — the state agencies don't currently expose per-mine deep links.