Obsidian Ridge (Little Lake Perlite deposits; Desert Materials Corp. deposit), Sugarloaf Mountain, Inyo County, California, USAi
| Regional Level Types | |
|---|---|
| Obsidian Ridge (Little Lake Perlite deposits; Desert Materials Corp. deposit) | Group of Ridges |
| Sugarloaf Mountain | Mountain |
| Inyo County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
36° 1' 15'' North , 117° 50' 9'' West
Latitude & Longitude (decimal):
Type:
Group of Ridges
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Olancha | 192 (2015) | 32.9km |
| Inyokern | 1,099 (2018) | 41.6km |
| China Lake Acres | 1,876 (2011) | 42.8km |
| Ridgecrest | 28,780 (2017) | 46.7km |
| Searles Valley | 1,739 (2011) | 48.0km |
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 |
|---|---|---|
| Indian Wells Valley Gem & Mineral Society | Ridgecrest, California | 47km |
A Perlite (Trace) - Pumice occurrence located in the NE¼ sec. 14, T22S, R38E (MRDS file presents T&R values of sec. 12, T22S, R39E), MDM, 0.1 km (0.0 mile) SSW of Sugarloaf Mountain (coordinates of record), NNE of Little Lake, about 8 miles W of Coso Hot Springs (?), on military reservation land (China Lake Naval Ordnance Test Station). MRDS database stated accuracy for this location is 500 meters.
NOTE: The USGS MRDS database provides file #10076665 as a related file; however, it obviously has nothing to do with this deposit. The T&R value presented by the MRDS file place this occurrence somewhere in Black Canyon to the NE.
A good reference is Strong (1964a). The coordinates are placed on the black outcrop visible in her article photos and on the ESRI satellite view.
Local rocks include Quaternary volcanic flow rocks, unit 5 (Coso Volcanic Field).
NOTE: The USGS MRDS database provides file #10076665 as a related file; however, it obviously has nothing to do with this deposit. The T&R value presented by the MRDS file place this occurrence somewhere in Black Canyon to the NE.
A good reference is Strong (1964a). The coordinates are placed on the black outcrop visible in her article photos and on the ESRI satellite view.
Local rocks include Quaternary volcanic flow rocks, unit 5 (Coso Volcanic Field).
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
6 valid minerals.
Rock Types Recorded
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Cristobalite Formula: SiO2 Description: Occurs in the linings of small spherical cavities in obsidian. References: Rock Currier collectionIdentified by Kevin Conroy: Visual Identification |
| ⓘ Fayalite Formula: Fe2+2(SiO4) Description: Occurs in the linings of small spherical cavities in obsidian as small brown crystals. |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 Description: Occurs as micro-crystals in the linings of small spherical cavities in obsidian. |
| ⓘ Opal Formula: SiO2 · nH2O Description: Occurs in the linings of small spherical cavities in obsidian. |
| ⓘ Orthoclase Formula: K(AlSi3O8) Description: Occurs in the linings of small spherical cavities in obsidian. |
| ⓘ Tridymite Formula: SiO2 Description: Occurs in the linings of small spherical cavities in obsidian. |
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | Opal | 4.DA.10 | SiO2 · nH2O |
| ⓘ | Tridymite | 4.DA.10 | SiO2 |
| ⓘ | Cristobalite | 4.DA.15 | SiO2 |
| Group 9 - Silicates | |||
| ⓘ | Fayalite | 9.AC.05 | Fe2+2(SiO4) |
| ⓘ | Orthoclase | 9.FA.30 | K(AlSi3O8) |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Opal | SiO2 · nH2O |
| O | Oxygen | |
| O | ⓘ Cristobalite | SiO2 |
| O | ⓘ Fayalite | Fe22+(SiO4) |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Opal | SiO2 · nH2O |
| O | ⓘ Orthoclase | K(AlSi3O8) |
| O | ⓘ Tridymite | SiO2 |
| Al | Aluminium | |
| Al | ⓘ Orthoclase | K(AlSi3O8) |
| Si | Silicon | |
| Si | ⓘ Cristobalite | SiO2 |
| Si | ⓘ Fayalite | Fe22+(SiO4) |
| Si | ⓘ Opal | SiO2 · nH2O |
| Si | ⓘ Orthoclase | K(AlSi3O8) |
| Si | ⓘ Tridymite | SiO2 |
| K | Potassium | |
| K | ⓘ Orthoclase | K(AlSi3O8) |
| Fe | Iron | |
| Fe | ⓘ Fayalite | Fe22+(SiO4) |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
Other Databases
| Link to USGS MRDS: | 10261057 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Antler Foreland BasinBasin
- Basin and Range BasinsBasin
- Mojave DomainDomain
- Southern Basin and RangeWide Rift
USA
- California
- Inyo County
- Coso RangeMountain Range
- Inyo County
- Mojave DesertDesert
- Sierra NevadaMountain Range
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060270223
Rogers, Austin F. (1922) A New Occurrence of Cristobalite in California. The Journal of Geology, 30 (3) 211-216 doi:10.1086/622873
Murdoch, Joseph; Webb, Robert W. (1940) Notes on some minerals from southern California. II. American Mineralogist, 25 (8). 549-555
Obsidian Ridge, Sugarloaf Mountain, Inyo County, California, USA