| Deposit ID | 10045486 |
|---|---|
| MRDS ID | M233241 |
| Record type | Site |
| Current site name | Big Twenty Mine |
| Alternate or previous names | NBMG # 3784 |
| Geographic coordinates: | -118.92569, 38.97213 (WGS84) |
|---|
Political divisions (FIPS codes)
Mineral(county)
Nevada(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Hussman Spring(quadrangle 1:24,000 scale)
Walker Lake(quadrangle 1:100,000 scale)
Walker Lake(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Walker(hydrologic unit)
Walker(hydrologic accounting unit)
Central Lahontan(hydrologic subregion)
Great Basin(hydrologic region)
Federal lands
BIA(Federal land areas administered by BIA)
| Country | State | County |
|---|---|---|
| United States | Nevada | Mineral |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Mount Diablo | 013N | 027E | Nevada |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Silver | Primary |
| Materials | Type of material |
|---|---|
| Gold | Ore |
| Pyrite | Ore |
| Quartz | Gangue |
| Host or associated | Associated | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock > Diorite | ||||||||
| Rock unit name | Granitic Rocks | ||||||||
| Rock description | Granitic Rocks | ||||||||
| |||||||||
| Host or associated | Host |
|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock > Diorite |
| Rock unit name | Granitic Rocks |
| Rock description | Granitic Rocks |
| (1) | -118.92569, 38.97213 |
|---|
| Thickness | 0.61M |
|---|---|
| Width | 1.22M |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1904 |
| Discoverer | William Wilson |
| Year of first production | 1904 |
| District name | Mountain View District |
|---|
| Type of workings | Underground |
|---|---|
| Overall depth | 30.48M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | M233241 |
ROSS, 1961, GEOLOGY AND MINERAL DEPOSITS OF MINERAL COUNTY, NEVADA; NBMG BULL. 58
HILL, 1915, SOME MINING DISTRICTS IN NORTHEASTERN CALIFORNIA AND NORTHWESTERN NEVADA; USUGS BULL. 594
VANDERBURG, 1937, RECONNAISSANCE OF MINING DISTRICTS IN MINERAL COUNTY, NEVADA; USBM IC 6941
LINCOLN, 1923, MINING DISTRICTS AND MINERAL RESOURCES OF NEVADA; NEVADA NEWSLETTER PUBLISHING CO.
RANSOME, 1908, "THE YERINGTON COPPER DISTRICT, NEVADA";USGS BULL. 380, P. 118
TELLURIDE CLAIMS, MOUNTAIN VIEW MINING DISTRICT,MINERAL COUNTY, QUADE SITE VISIT 6-12-89,NBMG UNPUBLISHED MINING DISTRICT FILES (TINGLEY FILES)
| Subject category | Comment text |
|---|---|
| Deposit | THREE SUB PARALLEL VEINS, A CONTINUATION OF THE VEIN AT MOUNTAIN VIEW MINE, RANGING FROM A FEW INCHES TO 4 FEET WIDE. THE CROPPINGS OF THE VEINS CONSIST OF IRON-STAINED QUARTZ, UNDERGROUND THEY ARE REPRESENTED BY FRACTURE ZONES, ALONG WHICH THE GRANODIORITE IS SERICITIZED FOR A WIDTH OF 1 TO 2 FEET. SMALL IRON-STAINED QUARTZ STRINGERS CUT THE ALTERED ROCK IN A FEW PLACES, SHOWING SOME MANGANESE STAIN. |
| Deposit | THE MINERALIZATION WAS REPORTED TO BE MAINLY ON THE SOUTHSIDE OF THE DIKE. THE VEIN FILLING WAS DESCRIBED AS A SOFT LIGHT PUMICE-LIKE QUARTZ CONTAINING A LITTLE SULPHUR THOUGHT TO BE A PRODUCT OF THE OXIDATION OF PYRITE.THE DUMPS ARE COVERED WITH PYRITE AND SULPHUR. THE OLD MILL APPEARS TO HAVE TREATED SOME OF THE ORE WHICH IS NOW WITHIN THE WALKER RIVER INDIAN RESERVATION. ; INFO.SRC : 1 PUB LIT |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-APR-1981 | Royse, Sue E. | Nevada Bureau of Mines and Geology | |
| Updater | 01-AUG-1991 | Marcus, S. (Doebrich, J.) | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
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