Gas Canyon claim, Todd Valley, Forest Hill Mining District, Placer County, California, USAi
| Regional Level Types | |
|---|---|
| Gas Canyon claim | Claim |
| Todd Valley | Valley |
| Forest Hill Mining District | Mining District |
| Placer County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
38° 58' 35'' North , 120° 55' 6'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Auburn Lake Trails | 3,426 (2011) | 7.5km |
| Meadow Vista | 3,217 (2011) | 9.4km |
| Foresthill | 1,483 (2011) | 9.9km |
| Georgetown | 2,367 (2011) | 10.4km |
| Cool | 4,100 (2017) | 12.9km |
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 |
|---|---|---|
| El Dorado County Mineral and Gem Society | Placerville, California | 29km |
| Gold Country Treasure Seekers | Placerville, California | 29km |
| Nevada County Gem & Mineral Society | Grass Valley, California | 30km |
| Roseville Rock Rollers | Roseville, California | 41km |
A former Cr occurrence/mine located in the E½NW¼ sec. 13, T13N, R9E, MDM, about 6.6 km WSW of Todd Valley, E of Gas Canyon, N of Paradise Canyon/Todd Creek, and SSW of Spring Garden School. Owned by Walsh and Hall & R. H. Farmer (1918). Operated by R. H. Farmer (1918). MRDS database stated accuracy for this location is 100 meters.
The ore body is podiform. It is a nearly vertical, chimney-like body. At the 10 foot depth level, the body had a cross section measuring 4 feet by 6 feet, with the longer axis of the section oriented almost due E. A little uvarovite is present in the ore. Local rocks include Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains).
Workings include underground openings comprised of a 10 foot deep shaft.
Production data are found in: Rynearson, Garn Arthur (1953): 201.
Production statistics: Year: 1918 (period = 1917-1918); Cr ore (estimated at 34% Cr2O3.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsGallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| Group 9 - Silicates | |||
| ⓘ | Uvarovite | 9.AD.25 | Ca3Cr2(SiO4)3 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| O | ⓘ Uvarovite | Ca3Cr2(SiO4)3 |
| Si | Silicon | |
| Si | ⓘ Uvarovite | Ca3Cr2(SiO4)3 |
| Ca | Calcium | |
| Ca | ⓘ Uvarovite | Ca3Cr2(SiO4)3 |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Cr | ⓘ Uvarovite | Ca3Cr2(SiO4)3 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
Other Databases
| Link to USGS MRDS: | 10032078 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Calaveras-Baker 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 #0060610216
