Unnamed Cr occurrence [1], Upper Crystal Springs Reservoir (Crystal Springs Lake), San Mateo, San Mateo County, California, USAi
| Regional Level Types | |
|---|---|
| Unnamed Cr occurrence [1] | Occurrence |
| Upper Crystal Springs Reservoir (Crystal Springs Lake) | Reservoir |
| San Mateo | - not defined - |
| San Mateo County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
37° 30' 15'' North , 122° 20' 42'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Highlands-Baywood Park | 4,027 (2011) | 2.0km |
| Belmont | 27,218 (2017) | 6.4km |
| San Mateo | 103,536 (2017) | 6.7km |
| San Carlos | 29,931 (2017) | 7.5km |
| Emerald Lake Hills | 4,278 (2011) | 8.1km |
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 |
|---|---|---|
| Sequoia Gem and Mineral Society | Redwood City, California | 10km |
| Peninsula Gem & Geology Society, Inc. | Los Altos, California | 24km |
| Mineral & Gem Society of Castro Valley | Hayward, California | 30km |
| San Francisco Gem and Mineral Society, Inc. | San Francisco, California | 31km |
| Santa Clara Valley Gem & Mineral Society | San Jose, California | 44km |
Mindat Locality ID:
215169
Long-form identifier:
mindat:1:2:215169:7
GUID (UUID V4):
1decacfe-b069-4860-b173-7c1231d22a2f
An unnamed Cr occurrence located near Crystal Springs Lakes W of San Mateo, on the Pacific coast.
NOTE: Crystal Springs Lake are actually 2 reservoirs (lower & upper) which straddle the San Andreas Fault rift. Available data do not indicate which is closer to this occurrence.
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.
Detailed Mineral List:
| ⓘ Chromite Formula: Fe2+Cr3+2O4 Description: Occurs as scattered masses in serpentine. References: |
| ⓘ 'Serpentine Subgroup' Formula: D3[Si2O5](OH)4 References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| Unclassified | |||
| ⓘ | 'Serpentine Subgroup' | - | D3[Si2O5](OH)4 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| O | Oxygen | |
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| O | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| Si | Silicon | |
| Si | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
Other Regions, Features and Areas containing this locality
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References
