William Tell Mine, Sierra City, Sierra City Mining District, Sierra County, California, USAi
| Regional Level Types | |
|---|---|
| William Tell Mine | Mine |
| Sierra City | City |
| Sierra City Mining District | Mining District |
| Sierra County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° 33' 46'' North , 120° 36' 54'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Sierra City | 221 (2011) | 1.6km |
| Downieville | 282 (2011) | 18.2km |
| Whitehawk | 113 (2011) | 18.4km |
| Calpine | 205 (2011) | 18.9km |
| Valley Ranch | 109 (2011) | 19.9km |
A former lode Au occurrence/mine located in sec. 34, T20N, R12E, MDM, 1.6 km (1.0 mile) ESE of Sierra City, S of Haypress Creek, on National Forest land. The agent was W.H. Williams, Sierra City, California. MRDS database stated accuracy for this location is 100 meters. Long inactive mine.
Mineralization is a vein deposit with ore shoot hosted in slate and porphyry. The ore body strikes E and dips 75N. The vein is 8 feet thick with a slate hanging wall and footwall of porphyry and with an ore shoot 120 feet wide and 8 feet thick. The second vein is 3 feet thick. The ore is free-milling quartz ore. Local rocks include Paleozoic metavolcanic rocks, unit 2 (Northeastern Sierra Nevada).
Workings include surface and underground openings with an overall depth of 233.17 meters and comprised of 3 adits. No. 1 adit is 90 feet on the ore shoot with stopes on the small vein. The second adit is 250 feet as a crosscut and 170 additional feet as a drift, 175 feet beneath adit No. 1, on the 120 foot wide ore shoot, and with a raise to adit No. 1. The No. 3 adit is at least 490 feet, 500 feet beneath adit No. 2.. Only assessment work was done in 1916.
Production data are found in: Preston, E.B. (1893).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Native Gold Formula: Au |
| ⓘ Quartz 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 | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS MRDS: | 10034844 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Shoofly-Olds Ferry 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 #0060910537
