Section 21 prospect, Mount Thompson (Thompson Peak), El Dorado County, California, USAi
| Regional Level Types | |
|---|---|
| Section 21 prospect | Prospect |
| Mount Thompson (Thompson Peak) | Mountain |
| El Dorado County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
38° 47' 2'' North , 119° 59' 21'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Kirkwood | 158 (2011) | 11.6km |
| Alpine Village | 114 (2011) | 14.9km |
| South Lake Tahoe | 21,706 (2017) | 16.6km |
| Mesa Vista | 200 (2011) | 16.9km |
| Stateline | 842 (2011) | 20.3km |
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 |
|---|---|---|
| Great Basin Gem & Mineral Club | Carson City, Nevada | 46km |
| High Desert Rockers | Carson City, Nevada | 46km |
A gypsum-anhydrite occurrence located in sec. 21, T11N, R18E, MDM, 4.2 km (2.6 miles) WSW of Mount Thompson (coordinates of record) and 8.3 km (5.2 miles) SS of Meyers, NE of Big Meadow and E of Big Meadow Creek (9.5 miles S of Lake Tahoe), on National Forest land. MRDS database accuracy for this location is not stated.
Mineralization is a sedimentary gypsum deposit hosted in andesite. The ore body is irregular. Thin interbeds of gypsum occur with disseminated pyrite. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Gypsum Formula: CaSO4 · 2H2O |
| ⓘ Pyrite Formula: FeS2 Description: Disseminated material. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Gypsum | 7.CD.40 | CaSO4 · 2H2O |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Gypsum | CaSO4 · 2H2O |
| O | Oxygen | |
| O | ⓘ Gypsum | CaSO4 · 2H2O |
| S | Sulfur | |
| S | ⓘ Gypsum | CaSO4 · 2H2O |
| S | ⓘ Pyrite | FeS2 |
| Ca | Calcium | |
| Ca | ⓘ Gypsum | CaSO4 · 2H2O |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
Other Databases
| Link to USGS MRDS: | 10037742 |
|---|
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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