Last Chance Mine, Coarsegold, Coarsegold Mining District, Madera County, California, USAi
| Regional Level Types | |
|---|---|
| Last Chance Mine | Mine |
| Coarsegold | - not defined - |
| Coarsegold Mining District | Mining District |
| Madera County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
37° 14' 16'' North , 119° 38' 41'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Coarsegold | 1,840 (2011) | 5.7km |
| Oakhurst | 2,829 (2011) | 10.0km |
| Bass Lake | 527 (2011) | 11.9km |
| Yosemite Lakes | 4,952 (2011) | 12.5km |
| Ahwahnee | 2,246 (2011) | 15.9km |
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 |
|---|---|---|
| Mariposa Gem & Mineral Club | Mariposa, California | 40km |
A former lode Au mine located in the N½ center (estimated) sec. 14, T8S, R21E, MDM, 5.7 km (3.5 miles) ESE of Coarsegold, along the North Fork Fine Gold Creek (3 miles N of Ward Mountain). MRDS database stated accuracy for this location is 1,000 meters.
NOTE: MRDS file #10139225 is stated to be an additional applicable record for this locality per MRDS file #10035095. It contains a lesser volume of data than #10035095, but states that this locality is located in sec. 30, T9S, R22E, MDM, which is in obvious error.
Mineralization is a vein deposit with a 1 to 5 foot thick vein, hosted in slate and syenite. The main ore shoot is 250 feet long. The ore body dips 60NE at a thickness of 1.52 meters. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges).
Workings include underground openings comprised of an upper and a lower tunnel, each about 700 feet long, plus a 10-stamp stamp mill.
The ore carries 2% sulfides which average an assay value of $150/ton of Au (period values) (1888).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsGallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Gold | 1.AA.05 | Au |
| 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 |
| Au | Gold | |
| Au | ⓘ Gold | Au |
Other Databases
| Link to USGS MRDS: | 10035095 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Foothills-Wallowa DomainDomain
- Sierra Nevada BatholithVolcanic Arc
USA
- Sierra NevadaMountain Range
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060390111
