Gray Eagle prospect (Gray Eagle Discovery prospect; Gray Eagle claim), Tejon Tin project (Gorman Tin project), Lebec, Gorman District, Tehachapi Mountains, Kern County, California, USAi
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Latitude & Longitude (WGS84):
34° 51' 37'' North , 118° 45' 12'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Lebec | 1,468 (2011) | 10.4km |
| Frazier Park | 2,691 (2011) | 18.0km |
| Lake of the Woods | 917 (2011) | 22.7km |
| Stallion Springs | 2,488 (2011) | 27.3km |
| Mettler | 136 (2011) | 30.0km |
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 |
|---|---|---|
| Tehachapi Valley Gem & Mineral Society | Tehachapi, California | 41km |
A Sn occurrence/prospect located in the NE¼ sec. 23, T9N, R18W, SBM, 10.4 km (6.4 miles) ENE of Lebec and 11.5 km (7.1 miles) NE of Gorman (Los Angeles County) (300 yards W of the large spring aty the head of Alamos Creek). The discovery prospect of the district. MRDS database stated accuracy for this location is 500 meters.
Mineralization is hosted in limestone. Small, tin-bearing, iron-rich tactite, about 6 feet long and 18 inches wide, is exposed at the contact between limestone and granite. The minerals are maghemite, magnetite, ludwigitte and altered amphibole (probably anthophyllite). They are coated with Mn oxides, have fibrous structure, and are associated with magnetite, arsenopyrite and molybdenite. Cassiterite occurs as disseminated grains. Some Sn may be in the ludwigite and other minerals. Associated rocks include Late Cretaceous granite. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges).
Workings include surface openings.
Analytical data results: Ore grade is up to 3% Sn.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Anthophyllite ? Formula: ◻{Mg2}{Mg5}(Si8O22)(OH)2 Description: Altered material. |
| ⓘ Arsenopyrite Formula: FeAsS |
| ⓘ Cassiterite Formula: SnO2 Description: Occurs as grains. |
| ⓘ Ludwigite Formula: Mg2Fe3+(BO3)O2 |
| ⓘ Maghemite Formula: (Fe3+0.67◻0.33)Fe3+2O4 References: |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
| ⓘ 'Manganese Oxides' Description: Occurs as coatings on other minerals. |
| ⓘ Molybdenite Formula: MoS2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Molybdenite | 2.EA.30 | MoS2 |
| ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | Maghemite | 4.BB.15 | (Fe3+0.67◻0.33)Fe3+2O4 |
| ⓘ | Cassiterite | 4.DB.05 | SnO2 |
| Group 6 - Borates | |||
| ⓘ | Ludwigite | 6.AB.30 | Mg2Fe3+(BO3)O2 |
| Group 9 - Silicates | |||
| ⓘ | Anthophyllite ? | 9.DD.05 | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
| Unclassified | |||
| ⓘ | 'Manganese Oxides' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Anthophyllite | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
| B | Boron | |
| B | ⓘ Ludwigite | Mg2Fe3+(BO3)O2 |
| O | Oxygen | |
| O | ⓘ Anthophyllite | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
| O | ⓘ Cassiterite | SnO2 |
| O | ⓘ Ludwigite | Mg2Fe3+(BO3)O2 |
| O | ⓘ Maghemite | (Fe3+0.67◻0.33)Fe23+O4 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| Mg | Magnesium | |
| Mg | ⓘ Anthophyllite | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
| Mg | ⓘ Ludwigite | Mg2Fe3+(BO3)O2 |
| Si | Silicon | |
| Si | ⓘ Anthophyllite | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
| S | Sulfur | |
| S | ⓘ Arsenopyrite | FeAsS |
| S | ⓘ Molybdenite | MoS2 |
| Fe | Iron | |
| Fe | ⓘ Arsenopyrite | FeAsS |
| Fe | ⓘ Ludwigite | Mg2Fe3+(BO3)O2 |
| Fe | ⓘ Maghemite | (Fe3+0.67◻0.33)Fe23+O4 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| As | Arsenic | |
| As | ⓘ Arsenopyrite | FeAsS |
| Mo | Molybdenum | |
| Mo | ⓘ Molybdenite | MoS2 |
| Sn | Tin | |
| Sn | ⓘ Cassiterite | SnO2 |
Other Databases
| Link to USGS MRDS: | 10033751 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mojave DomainDomain
- Sierra Nevada BatholithVolcanic Arc
USA
- Sierra NevadaMountain Range
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file #0060291005
