| Deposit ID | 10037037 |
|---|---|
| MRDS ID | M030095 |
| Record type | Site |
| Current site name | Forge Mine |
| Alternate or previous names | Iron Forge Prospect, Gold Coin, Eureaka Claims |
| Geographic coordinates: | -118.15098, 40.74989 (WGS84) |
|---|---|
| Elevation | 1356 |
Political divisions (FIPS codes)
Pershing(county)
Nevada(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Imlay(quadrangle 1:24,000 scale)
Eugene Mountains(quadrangle 1:100,000 scale)
Lovelock(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Lower Humboldt(hydrologic unit)
Humboldt(hydrologic accounting unit)
Black Rock Desert-Humboldt(hydrologic subregion)
Great Basin(hydrologic region)
Federal lands
Bureau of Land Management(Bureau of Land Management NV)
Bureau of Land Management NV BLM(Type of land area)
BLM(Federal land areas administered by BLM)
| Country | State | County |
|---|---|---|
| United States | Nevada | Pershing |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Mount Diablo | 033N | 034E | 38 | Nevada |
| Commodity | Importance |
|---|---|
| Tungsten Critical | Primary |
| Molybdenum | Tertiary |
| Materials | Type of material |
|---|---|
| Molybdenite | Ore |
| Scheelite | Ore |
| Calcite | Gangue |
| Epidote | Gangue |
| Garnet | Gangue |
| Pyrite | Gangue |
| Quartz | Gangue |
| Result | 0.5% WO3 |
|---|
| Model code | 42 |
|---|---|
| USGS model code | 14a |
| Deposit model name | W skarn |
| Host or associated | Associated | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock > Diorite | ||||||||
| Rock unit name | Forge Stock | ||||||||
| Rock description | Forge Stock | ||||||||
| |||||||||
| Host or associated | Associated |
|---|---|
| Rock type | Metamorphic Rock > Hornfels |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Shale |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Carbonate > Limestone |
| Rock unit name | Raspberry |
| Rock description | Raspberry |
| (1) | -118.15098, 40.74989 |
|---|
| Type of structure | Local |
|---|---|
| Structure description | Faults |
| General form | IRREGULAR |
|---|---|
| Strike | N5-10E |
| Dip | 83E |
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| District name | Mill City District |
|---|
| Ownership category | BLM Administrative Area |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | M030095 |
SCHILLING, 1962, MOLYBDENUM OCCURRENCES IN NEVADA; NBMG REPORT 2
JOHNSON AND BENSON, 1963, TUNGSTEN RESOURCES OF NEVADA; USBM
STAGER, H. K., IN PREPARATION, NBMG BULL ON TUNGSTEN DEPOSITS OF NEVADA.
| Subject category | Comment text |
|---|---|
| Deposit | SCHEELITE MINERALIZATION OCCURS IN IRREGULAR ZONES IN LIMESTONE AND TACTITE BEDS. AT LEAST 6 SEPARATE NARROW LIMESTONE BEDS HAVE BEEN IDENTIFIED WITHIN THE LARGELY HORNFELS SECTION. SHORT SEGMENTS OF 2 OR 3 SEPARATE LIMESTONE BEDS ARE IN CONTACT WITH THE MARGINS OF THE STOCK WHERE EXPOSED IN THE GULLY IN THE CENTER OF THE PROPERTY. THESE BEDS HAVE BEEN CONVERTED TO MASSIVE GARNET TACTITE CONTAINING SCATTERED SCHEELITE. ON THE WEST SIDE OF THE CANYON, WHAT APPEAR TO BE OLDER MINE WORKINGS EXPLORE AN AREA OF QUARTZ VEINS IN THE GRANODIORITE. THE MOST EXTENSIVE MINE WORKINGS ARE EAST OF THE CANYON ON THE SOUTHERN POINT OF A SMALL SPURLIKE HILL OF HORNFELS WHICH JUTS AWAY FROM THE RANGE AT THIS POINT. A LONG DRIFT ADIT EXPOSES WEAKLY SILICIFIED ROCK WITH PODS OF GARNET WHICH HAVE FORMED ALONG A LIMESTONE BED FROM 10 TO 15 FT THICK. SCHEELITE MINERALIZATION IS VERY SPARSE WHERE EXPOSED IN THE BACK OF THE DRIFT. A FOURTH LIMESTONEBED, WITH WEAK SILICATION CROPS OUT EAST OF THE ADIT AND 2 |
| Deposit | MORE UNALTERED LIMESTONE BEDS CROP OUT FURTHER TO THE EAST ON THE LOWE FLANK OF THE HILL. |
| Deposit | AT FORGE MINE ONE LONG ADIT AND TWO SHORTER ONES WERE DRIVEN TO EXPOSE THE MOST PROMISING TACTITE BODIES, BUT NO ORE WAS FOUND. LIMESTONES CROPPING OUT ON FORGE PROPERTY ARE PARTIALLY REPLACED BY GARNET TACTITES AT A FEW POINTS ADJACENT TO THE CONTACT WITH THE INTRUSIVE. ; INFO.SRC : 1 PUB LIT |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-FEB-1978 | Theodore, Ted G. | Nevada Bureau of Mines and Geology | |
| Updater | 01-AUG-1985 | La Pointe, D.D. (Tingley, J.V.) | Nevada Bureau of Mines and Geology | |
| Updater | 01-NOV-1980 | Royse, Sue E. | Nevada Bureau of Mines and Geology | |
| Updater | 01-MAY-1994 | Li, Zhiping (Peters, S.) | U.S. Geological Survey |
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.