Osborne Mine (Mammoth claim; Olio claim; San Bernardino claim), Holcomb Valley, Holcomb Valley District, San Bernardino County, California, USAi
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Latitude & Longitude (WGS84):
34° 18' 23'' North , 116° 53' 1'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Big Bear City | 12,304 (2017) | 6.2km |
| Big Bear Lake | 5,213 (2017) | 7.4km |
| Lucerne Valley | 5,811 (2011) | 17.1km |
| Running Springs | 4,862 (2011) | 23.4km |
| Lake Arrowhead | 12,424 (2011) | 28.8km |
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 |
|---|---|---|
| Yucaipa Valley Gem & Mineral Society | Yucaipa, California | 34km |
| Orange Belt Mineralogical Society | San Bernardino, California | 43km |
| Valley Prospectors, Inc. | San Bernardino, California | 43km |
| Victor Valley Gem and Mineral Club | Victorville, California | 45km |
| First Class Miners | Yucca Valley, California | 47km |
A former lode Au occurrence/prospect/mine located in the N½ sec. 33, T3N, R1E, SBM, about 5.6 km NNW of Big Bear City, along the N margin of the E end of Holcomb Valley, on private (patented) land. The property is comprised of 3 patented claims, non-contiguous and en-echelon. 8-74 cres were worked in the late 1800's. MRDS database stated accuracy for this location is 100 meters.
Mineralization is a vein deposit hosted in quartz monzonite. The ore body is 1.22 meters thick. The veins are 1 to 4 feet thick. On the middle claim, one vein is exposed for 500 feet. 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 a 40 degree incline to the N at approximately 240 feet deep. Workings to the W of the shaft are believed to be largely above 60 foot level. Most of the workings lie within 300 feet E of the shaft, beneath an area now overlain by dump material. A SECOND VEIN, AS CLOSE AS 100 FT. NORTH OF MAIN SHAFT, HAS BEEN WORKED ALONG ITS STRIKE FOR ABOUT 400 FT., BUT AT SHALLOW DEPTHS. WEST OF SHAFT, WORKINGS BELIEVED TO EXIST LARGELY ABOVE 60 FT. LEVEL, AND EXTEND ONLY A SHORT DISTANCE BEYOND A HOLED-THROUGH RAISE ABOUT 150 FT. FROM THE MAIN SHAFT
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Native Gold Formula: Au |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native 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 | ⓘ Native Gold | Au |
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Coast MountainsMountain Range
North America PlateTectonic Plate
- Mojave DomainDomain
- Southern Basin and RangeWide Rift
USA
- California
- San Bernardino MountainsMountain Range
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file #0060710160
