Lester Mine, Fort Irwin, San Bernardino County, California, USAi
| Regional Level Types | |
|---|---|
| Lester Mine | Mine |
| Fort Irwin | - not defined - |
| San Bernardino County | County |
| California | State |
| USA | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
35° 14' 20'' North , 116° 46' 6'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Fort Irwin | 8,845 (2011) | 8.0km |
| Barstow | 23,692 (2017) | 44.4km |
| Barstow Heights | 24,202 (2006) | 48.7km |
| Lenwood | 3,543 (2011) | 50.6km |
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 |
|---|---|---|
| Mojave Desert Gem & Mineral Society | Barstow, California | 44km |
A former Au occurrence/mine located in the NE¼NE¼ sec. 21, T3N, R2E, SBM, 8.0 km (5.0 miles) WSW of the Fort Irwin garrison (town equivalent) (2 miles E of Silver Peak), on military reservation land (Fort Irwin). The property was comprised of 11 claims. MRDS database stated accuracy for this location is 10 meters. This mine was probably opened in the late 1920's.
Mineralization is hosted in granite and limestone. The ore body strikes N45W & NE and dips 90. There are 2 veins. The NE-trending one intersects the NW=trending one 200 feet NW of a shallow shaft. Beyond this point the vein is exposed for about 1 mile. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges) and/or Quaternary alluvium and marine deposits.
Workings include underground openings with an overall depth of 7.62 meters and comprised of several short tunnels and shallow shafts. A small cyanide mill was erected.
Production data are found in: Wright, L.A., et al (1953).
A small quantity of Au ore was produced in 1920.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
2 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:
| ⓘ 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 Databases
| Link to USGS MRDS: | 10103336 |
|---|
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
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
