Josephson prospect, Yankee Hill, Butte County, California, USAi
| Regional Level Types | |
|---|---|
| Josephson prospect | Prospect |
| Yankee Hill | Census-designated Place |
| Butte County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° 41' 31'' North , 121° 30' 57'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Yankee Hill | 333 (2011) | 1.4km |
| Concow | 710 (2011) | 4.3km |
| Berry Creek | 1,424 (2011) | 10.9km |
| Paradise | 26,476 (2017) | 11.8km |
| Magalia | 11,310 (2011) | 14.4km |
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 |
|---|---|---|
| Paradise Gem & Mineral Club | Paradise, California | 12km |
| Feather River Lapidary & Mineral Society | Oroville, California | 20km |
A Mn-Au occurrence/prospect located in the SE¼NW¼ sec. 10, T21N, R4E, MDM, 1.4 km (4,600 feet) SSE of Yankee Hill, on patented (private) land. Owned and operated by W. C. Josephson, Oroville, California. MRDS database stated accuracy for this location is 10,000 meters (sic).
The ore body strikes N45W and dipd 75E. Black manganese oxide occurring in chert is enclosed in black slate or phyllite. The ore bodies are tabular with a total thickness of about 10 feet and are mostly soft pyrolusite, intermingled with white silica. Local rocks include Paleozoic marine rocks, undivided, unit 6 (Northwestern Sierra Nevada).
Workings include surface openings comprised of several pits.
No production.
Analytical data results: Ore averages 30% Mn.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Pyrolusite Formula: Mn4+O2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Pyrolusite | 4.DB.05 | Mn4+O2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Pyrolusite | Mn4+O2 |
| Mn | Manganese | |
| Mn | ⓘ Pyrolusite | Mn4+O2 |
Other Databases
| Link to USGS MRDS: | 10028435 |
|---|
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 ID #0060070002
