Sweet Ranch occurrence, Dew Drop, Nevada County, California, USAi
| Regional Level Types | |
|---|---|
| Sweet Ranch occurrence | Occurrence |
| Dew Drop | - not defined - |
| Nevada County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° 5' 24'' North , 121° 5' 31'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Lake of the Pines | 3,917 (2011) | 6.4km |
| Alta Sierra | 6,911 (2011) | 6.6km |
| Meadow Vista | 3,217 (2011) | 11.6km |
| Colfax | 2,005 (2017) | 12.0km |
| Penn Valley | 1,621 (2011) | 14.6km |
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 |
|---|---|---|
| Nevada County Gem & Mineral Society | Grass Valley, California | 15km |
| Roseville Rock Rollers | Roseville, California | 41km |
| Sutter Buttes Gem & Mineral Society | Marysville, California | 44km |
| El Dorado County Mineral and Gem Society | Placerville, California | 47km |
| Gold Country Treasure Seekers | Placerville, California | 47km |
Mindat Locality ID:
84790
Long-form identifier:
mindat:1:2:84790:9
GUID (UUID V4):
5f22d81d-0c57-4636-b5dd-7f4a76de68af
A Cr-Au occurrence/mine located in the SE¼ sec. 4, T14N, R8E, MDM, 0.5 km (0.3 mile) NW of Dew Drop, on private land. Discovered in 1898. Owned by John Sweet (1918). Owned/operated by Edward Morgan, Henry Yue (1918). MRDS database stated accuracy for this location is 500 meters.
Mineralization is hosted in rhyolite. Local rocks include ultramafic rocks, chiefly Mesozoic, unit 2 (Western Sierra Nevada and Klamath Mountains).
Workings include surface and underground openings comprised of an open cut from 10 to 15 feet long and 40 feet deep plus a 20 foot drift into the face of the cut.
A little ore was mined about 1898. Production figures submitted by the owner reported yields of 82 long tons in 1916, 20 tons in 1917, and 424 tons in 1918. The latter figure appears rather high unless it includes some ore of milling-grade as investigator reported that only 300 tons of shipping grade ore had been mined and not much of that grade was to be seen in the workings late in 1918. Although the deposit contained several hundred tons of milling-grade ore, the nearest custom mill was too far away for profitable hauling.
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 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
Other Databases
| Link to USGS MRDS: | 10031686 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Foothills-Wallowa DomainDomain
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file #0060570024
