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Jumper & Tippecanoe Mine (Jumper Mine), Downieville, Downieville Mining District, Sierra County, California, USAi
| Regional Level Types | |
|---|---|
| Jumper & Tippecanoe Mine (Jumper Mine) | Mine |
| Downieville | - not defined - |
| Downieville Mining District | Mining District |
| Sierra County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° 31' 44'' North , 120° 50' 30'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Downieville | 282 (2011) | 3.6km |
| Pike | 134 (2011) | 16.7km |
| Sierra City | 221 (2011) | 18.3km |
| Washington | 185 (2011) | 19.2km |
| Camptonville | 158 (2011) | 19.7km |
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 | 39km |
A former lode Au occurence/mine located in sec. 1, T19N, R10E, MDM, about 4 km (2½ miles) SSW of Downieville, along the N canyon wall of Rock Creek, S of the North Yuba River. MRDS database stated accuracy for this location is 1,000 meters. Microfilm (which ?) gives reference to locations being in the W½NW¼ and the SE¼SW¼ of the section. Clark lists this mine simply as the Jumper Mine.
Mineralization is a vein deposit hosted in slate and granite. The ore body strikes N and dips vertically. The vein is 3½ feet (1.2 meters) thick with clay gouge. It is parallel to a larger vein of quartz with a surface length of 300 feet on the same formation as the High Commission & Moore Mines. It is probably vertical, but may dip a little to the E. Local rocks include Paleozoic marine rocks, undivided, unit 4 (Western Sierra Nevada) an/or Tertiary pyroclastic and volcanic mudflow deposits, unit 9 (Cascade Range).
Workings include surface and underground openings comprised of 2 adits. The lower adit is 8 feet. Also pits and trenches dug on surface. The workings are on a slide.
Production data are found in: MacBoyle, Errol (1920b).
No other production record was found.
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: | 10034785 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Calaveras-Baker 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 #0060910175
