Dunderburg Mine (Dunderberg Mine), Dunderberg Peak (Castle Peak), Castle Peak Mining District, Mono County, California, USAi
| Regional Level Types | |
|---|---|
| Dunderburg Mine (Dunderberg Mine) | Mine |
| Dunderberg Peak (Castle Peak) | Peak |
| Castle Peak Mining District | Mining District |
| Mono County | County |
| California | State |
| USA | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
38° 6' 7'' North , 119° 15' 5'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Mono City | 172 (2011) | 11.6km |
| Bridgeport | 575 (2011) | 17.2km |
| Lee Vining | 222 (2011) | 19.7km |
| June Lake | 629 (2011) | 39.0km |
| Yosemite Valley | 1,035 (2011) | 49.3km |
A former Au-Ag mine located in the E½ SE¼ sec. 19, T3N, R25E, MDM, 4.6 km (2.9 miles) NNE of Dunderberg Peak (coordinates of record), on National Forest and/or state of California land (1 mile ESE from the Green Creek campground) (located claim). Owned by Doland Segerstrom (1978). MRDS database stated accuracy for this location is 10 meters.
Mineralization is hosted in granite. The ore body strikes N and dips 45W at a thickness of 2.74 meters. Ore in the lower tunnel is highly mineralized with pyrite. Alteration is local (oxidation). Local rocks include Mesozoic volcanic rocks, unit 3 (Mojave Desert, Death Valley area, and Eastern Sierra Nevada).
Workings include underground openings with a length of 944.88 meters and an overall depth of 304.8 meters. They are comprised of 3 crosscut tunnels with the upper at 900 feet long. 200 feet below is a 1,700 foot long tunnel, and 800 feet below that is a 500 foot adit with a 100 foot deep winze.
Oxidized ore in the upper tunnel carries values in Au from $20 - $40/ton (period values).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Native Gold Formula: Au |
| ⓘ Native Silver Formula: Ag References: |
| ⓘ Pyrargyrite Formula: Ag3SbS3 References: |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| ⓘ | Native Silver | 1.AA.05 | Ag |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Pyrargyrite | 2.GA.05 | Ag3SbS3 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Pyrargyrite | Ag3SbS3 |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
| Ag | Silver | |
| Ag | ⓘ Pyrargyrite | Ag3SbS3 |
| Ag | ⓘ Native Silver | Ag |
| Sb | Antimony | |
| Sb | ⓘ Pyrargyrite | Ag3SbS3 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS MRDS: | 10007172 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mojave DomainDomain
- Sierra Nevada BatholithVolcanic Arc
- West Nevada Permian-Triassic BasinBasin
USA
- Sierra NevadaMountain Range
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060510033
