Late property, Railroad Flat, Railroad Flat Mining District, East Belt, Calaveras County, California, USAi
| Regional Level Types | |
|---|---|
| Late property | Property |
| Railroad Flat | Census-designated Place |
| Railroad Flat Mining District | Mining District |
| East Belt | - not defined - |
| Calaveras County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
38° 18' 42'' North , 120° 31' 57'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Rail Road Flat | 475 (2015) | 3.9km |
| Mountain Ranch | 1,628 (2011) | 9.3km |
| West Point | 674 (2011) | 9.7km |
| Fort Jones | 643 (2006) | 11.5km |
| Red Corral | 1,413 (2017) | 12.8km |
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 |
|---|---|---|
| Amador County Gem & Mineral Society | Sutter Creek, California | 25km |
| Calaveras Gem & Mineral Society | Angels Camp, California | 27km |
A former Cr mine located in sec. 3, T5N, R13E, MDM, about 4.3 km SSW of Railroad Flat, along Jack Nelson Creek (on broad divide between North Fork Calaveras River and Esperanza Creek at 2,800 feet elevation). Operated during WWI. Idle since 1918. MRDS database accuracy for this location is not stated.
Cnromite float dug from the soil 18 to 40 inches deep overlying highly talcose, schistose serpentine. No ore located in situ. Pieces of chromite averaged about 3 inches in diameter. Ore was high-grade Cr2O3 at 49.6%. Local rocks include Paleozoic marine rocks, undivided, unit 4 (Western Sierra Nevada).
Workings included surface operations and coveredan area of several thousand square feet.
Production data: 45 tons of chromite float were dug.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Chromite Formula: Fe2+Cr3+2O4 |
| ⓘ 'Serpentine Subgroup' Formula: D3[Si2O5](OH)4 Description: Occurs in host rock. |
| ⓘ Talc Formula: Mg3Si4O10(OH)2 Description: Occurs as highly talcose serpentine. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| Group 9 - Silicates | |||
| ⓘ | Talc | 9.EC.05 | Mg3Si4O10(OH)2 |
| Unclassified | |||
| ⓘ | 'Serpentine Subgroup' | - | D3[Si2O5](OH)4 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Talc | Mg3Si4O10(OH)2 |
| H | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| O | Oxygen | |
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| O | ⓘ Talc | Mg3Si4O10(OH)2 |
| O | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| Mg | Magnesium | |
| Mg | ⓘ Talc | Mg3Si4O10(OH)2 |
| Si | Silicon | |
| Si | ⓘ Talc | Mg3Si4O10(OH)2 |
| Si | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
Other Databases
| Link to USGS MRDS: | 10029232 |
|---|
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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