Green Ridge claim (Dynamite Kid; Wells Mine; WW I), Yankee Hill, Butte County, California, USAi
| Regional Level Types | |
|---|---|
| Green Ridge claim (Dynamite Kid; Wells Mine; WW I) | Claim |
| Yankee Hill | Census-designated Place |
| Butte County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° 42' 23'' North , 121° 31' 60'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Yankee Hill | 333 (2011) | 1.0km |
| Concow | 710 (2011) | 2.7km |
| Paradise | 26,476 (2017) | 9.6km |
| Magalia | 11,310 (2011) | 12.4km |
| Berry Creek | 1,424 (2011) | 13.0km |
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 | 10km |
| Feather River Lapidary & Mineral Society | Oroville, California | 21km |
A former Cr mine located in the SE¼NW¼ sec. 4, T21N, R4E, MDM, 1.0 km (3,300 feet) WNW of Yankee Hill (near the county road). Ceased operations in 1918. Owned and operated by John Wells, California (1976). Owned by Loren Babcock (1976). MRDS database stated accuracy for this location is 5,000 meters.
Mineralization is hosted in serpentinite, which is highly sheared. The ore body is lenticular, strikes N48W and dips 80NE at a thickness of 65 meters, a width of 16 meters and a length of 180 meters. The ore body(ies) is disseminated, tabular and shear zone. The primary mode of oigin was magmatic differentiation. Primary oe control was lithology. Wallrock alteration is intense (carbonitization). This deposit occurs in a mass of serpentine 300 - 400 feet wide and 0.5 miles long. Local rocks include Paleozoic marine rocks, undivided, unit 6 (Northwestern Sierra Nevada).
Workings include surface openings comprised of 2 open cuts, the largest of which was 80 feet long, 3 to 20 feet wide and 4 to 10 feet deep.
Production data are found in: Rynearson, Garn Arthur (1953): 281.
Assay analyses results: ^35% Cr2O3.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsGallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
Other Databases
| Link to USGS MRDS: | 10028429 |
|---|
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 #0060070099
