Hoge Mine (Great Northern Gold Mines Inc. Mine), Willow Valley, Nevada City Mining District, Nevada County, California, USAi
| Regional Level Types | |
|---|---|
| Hoge Mine (Great Northern Gold Mines Inc. Mine) | Mine |
| Willow Valley | Valley |
| Nevada City Mining District | Mining District |
| Nevada County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° 17' 23'' North , 120° 58' 58'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Nevada City | 3,152 (2017) | 4.3km |
| Grass Valley | 12,944 (2017) | 10.3km |
| North San Juan | 269 (2011) | 13.7km |
| Rough and Ready | 963 (2011) | 14.8km |
| Dutch Flat | 160 (2011) | 15.6km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| Nevada County Gem & Mineral Society | Grass Valley, California | 10km |
A lode Au-Ag-Cu-Pb occurrence located in secs. 4 & 5, T16N, R9E and in sec. 32, T17N, R9E, MDM, about 2.2 km N of Willow Valley (town) and about 4.3 km (2½ miles) ENE of Nevada City proper, on National Forest land. The property comprises 280 acres. MRDS database stated accuracy for this location is 500 meters.
Mineralization is a vein deposit hosted in granodiorite. There are 2 veins averaging 2 feet in thickness. A slate contact occurs 100 feet from the shaft (direction = ??). Local rocks include Tertiary pyroclastic and volcanic mudflow deposits, unit 9 (Cascade Range)
Workings include underground openings with a length of 3,218.6 meters and an overall depth of 365.76 meters, and comprised of a shaft and an incline plus extensive workings.
Production data are found in: Goodwin, Joseph Grant (1957).
Production statistics: Year: 1941 (period = 1929 to 1941) (estimated): Cu = 1 metric ton; Pb = 5 metric tons. Average of $12 (period values) Au/ton. Total production was $600,000 (period values).
Analytical data results: Concentrates assayed at $200 to $800 (period values) per ton.
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
4 valid minerals.
Detailed Mineral List:
| ⓘ Galena Formula: PbS |
| ⓘ Native Gold Formula: Au |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Galena | PbS |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS MRDS: | 10007509 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Foothills-Wallowa DomainDomain
- Sierra Nevada BatholithVolcanic Arc
USA
- Sierra NevadaMountain Range
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file #0060570498
