Hunt & Robie Ranches (Hunt and Robie Ranches; Hilton Gold Dredging Enterprise; Milton Gold Dredging Enterprise - 1936; Stagan Mining Company - 1940), Jenny Lind, Jenny Lind Mining District, Calaveras County, California, USAi
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Latitude & Longitude (WGS84):
38° 3' 49'' North , 120° 52' 23'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Rancho Calaveras | 4,489 (2018) | 7.2km |
| Valley Springs | 3,553 (2011) | 14.7km |
| Wallace | 403 (2011) | 17.2km |
| Peters | 672 (2011) | 17.9km |
| Farmington | 207 (2011) | 18.6km |
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 |
|---|---|---|
| Calaveras Gem & Mineral Society | Angels Camp, California | 29km |
| Amador County Gem & Mineral Society | Sutter Creek, California | 37km |
| Stockton Lapidary & Mineral Club | Stockton, California | 38km |
| Mother Lode Mineral Society | Modesto, California | 48km |
A former placer Au-Ag occurrence/mine located in secs. 33, 34 & 35, T3N, R10E, MDM, 3.5 km (2.2 miles) S of Jenny Lind, along South Gulch. MRDS database stated accuracy for this location is 100 meters.
Mineralization is a placer Au-Ag deposit hosted in gravels. The Robie Ranch gravel deposit has an average depth of about 7 feet and is thought to test about 25 (?) per cubic yard. The bedrock is volcanic tuff. Portions of the gravel are lava capped, and in a few places, the gravel is partly cemented. Local rocks include Miocene nonmarine rocks.
Workings included surface operations with a dragline dredge. From 2,000 to 3,000 cubic yards of gravel were treated daily in 1936. 3 men were employed.
In 1940, 86,000 cubic yards of gravel yielded 615 ounces of Au and 37 ounces Ag at the Hunt Ranch. At the Robie Ranch, 414,000 cubic yards of gravel yielded 2,287 ounces Au and 145 ounces Ag.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Native Gold Formula: Au Description: Placer material. Apparently somewhat argentiferous. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
List of minerals for each chemical element
| Au | Gold | |
|---|---|---|
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS MRDS: | 10028581 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- California Central ValleyAccretionary Complex
- Great Valley DomainDomain
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