Unnamed Ni occurrence [1], Valley Springs, Pardee Mining District, Calaveras County, California, USAi
| Regional Level Types | |
|---|---|
| Unnamed Ni occurrence [1] | Occurrence |
| Valley Springs | Census-designated Place |
| Pardee Mining District | Mining District |
| Calaveras County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
38° 12' 52'' North , 120° 47' 27'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Valley Springs | 3,553 (2011) | 4.2km |
| San Andreas | 2,783 (2011) | 9.9km |
| Rancho Calaveras | 4,489 (2018) | 11.3km |
| Mokelumne Hill | 646 (2011) | 12.1km |
| Buena Vista | 429 (2011) | 13.9km |
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 | 20km |
| Calaveras Gem & Mineral Society | Angels Camp, California | 27km |
A Ni occurrence located in the W½ sec. 8, T4N, R11E, MDM, (2 miles to Valley Springs by paved road). Discovered in 1954. MRDS database stated accuracy for this location is 1,000 meters.
Mineralization is a Ni deposit hosted in Late Cretaceous serpentinite. The ore body is 30.48 meters thick. Nickel-bearing lateritic mantle is found on the tops of serpentine hills, which follows copntours of the present topography. The mantle can be divided into 2 zones which grade into one another: 1) A silicified zone, and 2) the magnesite zone. Garnierite and chrysoprase are the main nickel-bearing minerals found at the base of the lateritic mantle as veins in fractured serpentine or contained within a boxwork of silicified zone serpentine, which seems to have been derived from peridotite and pyroxenite. The base of the mantle has an average elevation of 1,050 feet and ranges in thickness from 20 to 100 feet, averaging 50 feet. Local rocks include ultramafic rocks, chiefly Mesozoic, unit 2 (Western Sierra Nevada and Klamath Mountains).
Analytical data results: Samples assayed between 0.14 and 9.42% Ni oxide with an average of 1%.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ 'Chrysoprase' |
| ⓘ 'Garnierite' |
| ⓘ 'Serpentine Subgroup' Formula: D3[Si2O5](OH)4 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Unclassified | |||
|---|---|---|---|
| ⓘ | 'Chrysoprase' | - | |
| ⓘ | 'Garnierite' | - | |
| ⓘ | 'Serpentine Subgroup' | - | D3[Si2O5](OH)4 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| O | Oxygen | |
| O | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| Si | Silicon | |
| Si | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
Other Databases
| Link to USGS MRDS: | 10033762 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Calaveras-Baker DomainDomain
- Sierra Nevada BatholithVolcanic Arc
USA
- California
- Mother Lode BeltBelt
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