| Deposit ID | 10047630 |
|---|---|
| MRDS ID | M243042 |
| Record type | Site |
| Current site name | Midnight Mine |
| Alternate or previous names | Bell Flat Mine, Midday Mine, Homestake Group |
| Geographic coordinates: | -118.19013, 39.11297 (WGS84) |
|---|---|
| Elevation | 1829 |
Political divisions (FIPS codes)
Churchill(county)
Nevada(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Slate Mountain(quadrangle 1:24,000 scale)
Fallon(quadrangle 1:100,000 scale)
Reno(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Dixie Valley(hydrologic unit)
Central Nevada Desert Basins(hydrologic accounting unit)
Central Nevada Desert Basins(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 | Churchill |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Mount Diablo | 014N | 034E | 06 | NE | Nevada |
| Commodity | Importance |
|---|---|
| Tungsten Critical | Primary |
| Molybdenum | Tertiary |
| Materials | Type of material |
|---|---|
| Powellite | Ore |
| Scheelite | Ore |
| Model code | 42 |
|---|---|
| USGS model code | 14a |
| Deposit model name | W skarn |
| Host or associated | Associated |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite |
| Host or associated | Associated |
|---|---|
| Rock type | Plutonic Rock > Granitoid > Granite |
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Schist |
| (1) | -118.19013, 39.11297 |
|---|
| Type of structure | Local |
|---|---|
| Structure description | Nw-Trending Faults |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1941 |
| Discoverer | Mark Harris Of Fallon, Nv |
| District name | Fairview District |
|---|
| Ownership category | BLM Administrative Area |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | M243042 |
LEMMON, D.M. AND TWETO, O.L., USGS MAP MR-25
LEMMON, D.M., UNPUB. DATA.
STAGER, H.K., UNPUB. DATA ON TUNGSTEN DEPOSITS OF NEVADA, TO BE A NBMG BULL.
STAGER, H.K.
| Subject category | Comment text |
|---|---|
| Deposit | LIMY BEDS IN SCHIST ARE UP TO 10 FT WIDE, TRACEABLE BY DISCONTINUOUS OUTCROPS FOR 3000 FT ALONG STRIKE. IN 2 LOCALITIES THEY ARE PURE MARBLEIZED LIMESTONE, BUT IN MOST PLACES THEY HAVE BEEN METAMORPHOSED TO TACTITE (EPIDOTE, QUARTZ, GARNET) MOST OF WHICH CONTAINS SMALL AMOUNTS OF SCHEELITE. THE 3 TACTITE BEDS CONTAIN SCHEELITE AND POWELLITE IN SMALL AMOUNTS, INTERMITTENTLY ALONG A STRIKE LENGTH OF 3000 FT THE BEDS ARE ABOUT 250 FT APART STRATIGRAPHICALLY. THE SCHEELITE AND POWELLITE OCCUR IN CRYSTALS AS MUCH AS 0.5 IN. IN DIAMETER, COMMONLY SPACED SEVERAL INCHES APART ALONG FRACTURES IN THE TACTITE BEDS. THE SMALL QUANTITIES OF ORE MINED AVERAGE ABOUT 0.5% WO3. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-SEP-1986 | La Pointe, D.D. (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.