Rolpholm Ranch prospect (Rolpholm Ranch; Rolph Ranch), Moulton prospects, Chicago Park, Nevada County, California, USAi
| Regional Level Types | |
|---|---|
| Rolpholm Ranch prospect (Rolpholm Ranch; Rolph Ranch) | Prospect |
| Moulton prospects | Group of Prospects |
| Chicago Park | Park |
| Nevada County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° 7' 38'' North , 120° 58' 34'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Colfax | 2,005 (2017) | 3.5km |
| Alta Sierra | 6,911 (2011) | 6.9km |
| Lake of the Pines | 3,917 (2011) | 12.0km |
| Grass Valley | 12,944 (2017) | 12.6km |
| Meadow Vista | 3,217 (2011) | 14.6km |
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 | 13km |
| El Dorado County Mineral and Gem Society | Placerville, California | 47km |
| Gold Country Treasure Seekers | Placerville, California | 47km |
| Roseville Rock Rollers | Roseville, California | 50km |
A former Cr-asbestos occurrence/prospect located in secs. 28 & 29, T15N, R9E, MDM, 2.1 km (1.3 miles) SSW of Chicago Park, ESE of Mount Olive, on private land. Owned by Mrs. Rolph (1942). Operated by H.E. McClellan (1943). MRDS database stated accuracy for this location is 1,000 meters. The Rolph Ranch was reported to be located in the N½ of sec. 28.
The ore body is irregular in form, strikes N55W and dips 45NE. Local rocks include Mesozoic gabbroic rocks, unit 2 (undivided).
Workings include surface openings comprised of several pits, one of which was 7 feet deep (1942).
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: | 10031795 |
|---|
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 #0060570479
