San Geronimo prospect, San Geronimo, Marin County, California, USAi
| Regional Level Types | |
|---|---|
| San Geronimo prospect | Prospect |
| San Geronimo | - not defined - |
| Marin County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
38° 0' 51'' North , 122° 39' 30'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| San Geronimo | 446 (2011) | 0.5km |
| Woodacre | 1,348 (2011) | 1.2km |
| Lagunitas-Forest Knolls | 1,819 (2011) | 2.9km |
| Sleepy Hollow | 2,384 (2011) | 6.5km |
| Fairfax | 7,626 (2017) | 6.8km |
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 |
|---|---|---|
| San Francisco Gem and Mineral Society, Inc. | San Francisco, California | 34km |
| Vallejo Gem & Mineral Society | Vallejo, California | 37km |
| Northern California Geological Society | Orinda, California | 45km |
| Santa Rosa Mineral And Gem Society, Inc. | Santa Rosa, California | 48km |
A Au prospect located in the SW¼ sec. 17, T2N, R7W, MDM, 0.4 km (0.2 mile; 1,200 feet) ENE of San Geronimo. MRDS database stated accuracy for this location is 1,000 meters.
The shaft was sunk in silica-carbonate rocks. Local rocks include rocks of the Franciscan melange.
Workings include underground openings comprised of a 200 foot deep shaft sunk in the 1870's and that has been filled in as a safety precaution. It is located 200 yards N of the Sir Francis Drake highway and 0.3 mile W of San Geranimo-Nicasio Road.
It was reported that the ore averaged $30 to $40 (period values) Au/ton and in addition contained Ag, Fe, Mn, Sb and traces of Ni.
There is no record of production.
Commodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.List of minerals for each chemical element
Other Databases
| Link to USGS MRDS: | 10092343 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- California Coast RangesAccretionary Complex
- Franciscan DomainDomain
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