Bonanza Dome and Beacon Mine (Bonanza Dome claims), Silver Peak [2], Shadow Mountains Tungsten-North Field, Shadow Mts [2], San Bernardino County, California, USAi
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Latitude & Longitude (WGS84):
34° 39' 59'' North , 117° 33' 3'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Adelanto | 33,166 (2017) | 16.0km |
| Silver Lakes | 5,623 (2017) | 21.1km |
| Lake Los Angeles | 12,328 (2011) | 26.0km |
| Mountain View Acres | 3,130 (2018) | 26.4km |
| Phelan | 14,304 (2011) | 26.8km |
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 |
|---|---|---|
| Victor Valley Gem and Mineral Club | Victorville, California | 28km |
A former W occurrence/mine located in sec. 30, T7N, R6W, SBM, NE of El Mirage Lake on the El Mirage Off Highway Vehicle Recreation Area, along the western slope of the Shadow Mountains [2] (4 miles S of Mojave). Owned by Norris Williams, Apple Valley, California. Produced during the period 1940 to 1943. MRDS database stated accuracy for this location is 100 meters.
Mineralization is hosted in marble and granite. The ore body is lenticular at a width of 1.83 meters. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges).
Workings include surface and underground openings. On the Beacon Dome there is a 55 foot shaft with a 20 foot winze below the 55 foot level workings. The Beacon has 23 shallow shafts and 2 pits with a maximum depth of 8 feet.
Production data are found in: Tucker, W. Burling & Reid J. Sampson (1943b).
Production statistics: Year: 1943 (period = < - 1943); WO3 averaged ^0.5%. 1 weight percent recovered. Produced between 500-600 tons of ore (1940-1943).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
3 valid minerals.
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:
| ⓘ Calcite Formula: CaCO3 |
| ⓘ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ 'Garnet Group' Formula: X3Z2(SiO4)3 |
| ⓘ Scheelite Formula: Ca(WO4) |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 5 - Nitrates and Carbonates | |||
|---|---|---|---|
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Scheelite | 7.GA.05 | Ca(WO4) |
| Group 9 - Silicates | |||
| ⓘ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Unclassified | |||
| ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | ⓘ Scheelite | Ca(WO4) |
| O | ⓘ Garnet Group | X3Z2(SiO4)3 |
| Al | Aluminium | |
| Al | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | Silicon | |
| Si | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Ca | ⓘ Scheelite | Ca(WO4) |
| Fe | Iron | |
| Fe | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| W | Tungsten | |
| W | ⓘ Scheelite | Ca(WO4) |
Other Databases
| Link to USGS MRDS: | 10035321 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mojave DomainDomain
- Southern Basin and RangeWide Rift
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