Beraudiere Mine, Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USAi
| Regional Level Types | |
|---|---|
| Beraudiere Mine | Mine |
| Mendenhall Springs | Group of Springs |
| Livermore Mining District (Tesla District) | Mining District |
| Alameda County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
37° 35' 29'' North , 121° 36' 59'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Livermore | 88,126 (2017) | 16.7km |
| Mountain House | 9,675 (2011) | 22.3km |
| Tracy | 87,075 (2017) | 23.5km |
| Sunol | 913 (2011) | 24.0km |
| Pleasanton | 79,510 (2017) | 24.1km |
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 |
|---|---|---|
| Livermore Valley Lithophiles | Livermore, California | 17km |
| Santa Clara Valley Gem & Mineral Society | San Jose, California | 37km |
| Mineral & Gem Society of Castro Valley | Hayward, California | 42km |
| Antioch Lapidary Club | Antioch, California | 49km |
| Peninsula Gem & Geology Society, Inc. | Los Altos, California | 50km |
Mindat Locality ID:
73351
Long-form identifier:
mindat:1:2:73351:8
GUID (UUID V4):
e0503f95-a174-47f1-8a1e-34ef7c01cb95
A former Mn-Fe-silica-zeolites occurrence/mine located in the NE¼NE¼NW¼ sec. 14, T4S, R3E, MDM, 2.6 km (1.6 miles; 8,500 feet) E of Mendenhall Springs, N of Arroyo Mocho along the W slope of Crane Ridge, on private land (fee ownership). Discovered in 1884. Owned by W. Holm and L.S. & L.J. Ione (100%), Livermore, CAlifornia (1975). First production occurred in 1885. MRDS database stated accuracy for this location is 100 meters.
Mineralization is hosted in Late Cretaceous chert. The ore body strikes N00S and dips 62W at a thickness of 3 meters, depth-to-top of 2 meters, width of 5 meters and a length of 17 meters. Ore body No. 1 is sedimentary and tabular. Ore body No. 2 is irregular. The primary mode of origin was sedimentation and the secondary mode was oxidation. Primary ore control was bedding and the secondary control was faulting. There is no wallrock alteration. Deposit is massive black oxide of Mn containing numerous cores of white, granular silica and ocherous material. The ore bed is enclosed in a thin-bedded, greenish chert that appears to be folded into an anticline (?). Local rocks include rocks of the Franciscan melange.
Workings include underground openings comprised of a 60 foot drift and a small glory hole.
production information: Property produced 47 tons of ore to 1917.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
1 valid mineral.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ 'Limonite' |
| ⓘ 'Psilomelane' |
| ⓘ Quartz Formula: SiO2 |
| ⓘ 'Zeolite Group' |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| ⓘ | 'Zeolite Group' | 9.G0. | |
| Unclassified | |||
| ⓘ | 'Limonite' | - | |
| ⓘ | 'Psilomelane' | - | |
Other Databases
| Link to USGS MRDS: | 10027967 |
|---|
Other Regions, Features and Areas containing this locality
North America
- Coast MountainsMountain Range
North America PlateTectonic Plate
- Franciscan DomainDomain
USA
- California
- Diablo RangeMountain Range
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References
