La Grange Dredge No. 4 (La Grange placers), La Grange, Stanislaus County, California, USAi
| Regional Level Types | |
|---|---|
| La Grange Dredge No. 4 (La Grange placers) | - not defined - |
| La Grange | Unincorporated Community |
| Stanislaus County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
37° 39' 59'' North , 120° 28' 10'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Snelling | 231 (2011) | 16.6km |
| Chinese Camp | 126 (2011) | 23.0km |
| Coulterville | 201 (2011) | 24.4km |
| Hickman | 641 (2011) | 25.5km |
| Waterford | 8,824 (2017) | 25.8km |
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 |
|---|---|---|
| Calaveras Gem & Mineral Society | Angels Camp, California | 45km |
| Mother Lode Mineral Society | Modesto, California | 47km |
| Mariposa Gem & Mineral Club | Mariposa, California | 49km |
A former surface placer Au-PGE (Pt-Ir-Os) deposit/mine (dredge) located in sec. 19, T3S, R14E, MDM, along the lower Tuolumne River at river mile 50, 0.6 km (2,000 feet) WNW of La Grange proper. MRDS database accuracy for this location is not stated. This locality is evidenced on the topo map by a large shaded area indicated as tailings.
NOTE: This one of several very large fairly contiguous dredged areas. Data presented in available references in insufficient to distinguish which of these areas had common ownership or a common operating dredge.
Mineralization is a stream placer deposit in the Ione Formation. The host material is gravel and conglomerate. Local rocks include Quaternary alluvium and marine deposits.
Tectonic Structures include the base of the Sierra Nevada foothills.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Native Gold Formula: Au |
| ⓘ Native Platinum Formula: Pt Description: Averages 72% Pt + 18% Os-Ir. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| ⓘ | Native Platinum | 1.AF.10 | Pt |
List of minerals for each chemical element
| Pt | Platinum | |
|---|---|---|
| Pt | ⓘ Native Platinum | Pt |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS MRDS: | 10141595 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Foothills-Wallowa DomainDomain
- Sierra Nevada BatholithVolcanic Arc
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060990150
