Northern Light prospect, Battle Mountain Mining District, Lander County, Nevada, USAi
| Regional Level Types | |
|---|---|
| Northern Light prospect | Prospect |
| Battle Mountain Mining District | Mining District |
| Lander County | County |
| Nevada | State |
| USA | Country |
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Latitude & Longitude (WGS84):
40° 36' 22'' North , 117° 1' 45'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Battle Mountain | 3,635 (2011) | 9.0km |
| Crescent Valley | 392 (2011) | 43.7km |
| Golconda | 214 (2011) | 54.6km |
Sec 11 T31N R43E Copper
Structure: NE-trending faults ad the Dewitt Thrust Fault Dewitt Thrust Fault
Alteration: Predominant alteration types affecting host rocks are silicification, pyritization, argillization, and sericitization. Gold mineralization is associated with fine-grained silica (locally chalcedonic) and pyrite replacing formerly calcareous siltstone and sandstone of the Harmony Formation. Extensive bleaching and argillization are believed to be caused by the breakdown of pyrite and liberation of sulfur as sulfate to form acid-leach type conditions. Monzonite-granodiorite porphyritic sills exhibit strong argillization and, locally, sericitization.
Commodity: Ore Materials: free gold, copper minerals Gangue Materials: quartz, chalcedony, goethite, jarosite, hematite
Deposit: The Northern Lights deposit occurs in the interbedded siltstones and sandstones of the Harmony Formation. The higher grade ore is localized by north-northeast and west-northwest steeply dipping structures. Several sub-horizontal monzonite-granodiorite porphyritic sills occur within the deposit. Gold mineralization is associated with fine-grained silica (locally chalcedonic) and pyrite replacing formerly calcareous siltstone and sandstone of the Harmony Formation. The intersections of two steeply dippng, mineralized structures which trend NNW and WNW have acted to localize higher grade ore. Distal disseminated silver-gold ore associated with silica-pyrite alteration at the Empire Mine (approximately 1.5 million tonnes averaging 1.8 g Au/t) and at the Northern Lights Mine (approximately 390,000 tonnes averaging 1.6 g Au/t) may be associated genetically with the Buckingham porphyry molybdenum system.
Deposit type: Carbonate-hosted Au-Ag
Development: Some copper ore was produced here in the early days of the district, and a few tons of sorted ore from the dumps was shipped in 1918. The principal shaft, reported to be about 300 feet deep, is now caved.
Ore(s): The intersections of two steeply dippng, mineralized structures which trend NNW and WNW have acted to localize higher grade ore.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
5 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Goethite Formula: Fe3+O(OH) |
| ⓘ Hematite Formula: Fe2O3 |
| ⓘ Jarosite Formula: KFe3+3(SO4)2(OH)6 |
| ⓘ Native Gold Formula: Au |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Quartz var. Chalcedony Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Goethite | 4.00. | Fe3+O(OH) |
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Quartz var. Chalcedony | 4.DA.05 | SiO2 |
| ⓘ | 4.DA.05 | SiO2 | |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Jarosite | 7.BC.10 | KFe3+3(SO4)2(OH)6 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Goethite | Fe3+O(OH) |
| H | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| O | Oxygen | |
| O | ⓘ Quartz var. Chalcedony | SiO2 |
| O | ⓘ Goethite | Fe3+O(OH) |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz var. Chalcedony | SiO2 |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| K | Potassium | |
| K | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| Fe | Iron | |
| Fe | ⓘ Goethite | Fe3+O(OH) |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS MRDS: | 10310309 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mojave DomainDomain
- Northern Basin and RangeWide Rift
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