Turtle Rock Quarry, Mount Diablo (Mt Diablo), Clayton, Contra Costa County, California, USAi
| Regional Level Types | |
|---|---|
| Turtle Rock Quarry | Quarry |
| Mount Diablo (Mt Diablo) | Mountain |
| Clayton | City |
| Contra Costa County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
37° 52' 11'' North , 121° 55' 14'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Diablo | 1,158 (2011) | 5.1km |
| Blackhawk | 9,354 (2011) | 5.6km |
| North Gate | 679 (2017) | 7.9km |
| Clayton | 11,867 (2017) | 8.0km |
| Danville | 44,400 (2017) | 8.8km |
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 |
|---|---|---|
| Contra Costa Mineral & Gem Society | Concord, California | 15km |
| Antioch Lapidary Club | Antioch, California | 18km |
| Northern California Geological Society | Orinda, California | 23km |
| Livermore Valley Lithophiles | Livermore, California | 25km |
| East Bay Mineral and Lapidary Club | Hayward, California | 26km |
A dimension stone deposit/quarry located in the SW¼SE¼ sec. 2, T1S, R1W, MDM, 1.5 km (0.9 miles; 4,800 feet) SSW of Mount Diablo (coordinates of record), on the southern slope of the mountain, on state-owned land (Mount Diablo State Park. MRDS database stated accuracy for this location is 500 meters. Glaucophane schist was quarried for use as a building stone.
Local rocks include rocks of the Franciscan Complex, unit 1 (Coast Ranges).
Workings include unspecified surface openings.
Small production probably totaling less than 20 tons. All was used locally.
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.
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:
| ⓘ Glaucophane Formula: ◻[Na2][Mg3Al2]Si8O22(OH)2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 9 - Silicates | |||
|---|---|---|---|
| ⓘ | Glaucophane | 9.DE.25 | ◻[Na2][Mg3Al2]Si8O22(OH)2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Glaucophane | ◻[Na2][Mg3Al2]Si8O22(OH)2 |
| O | Oxygen | |
| O | ⓘ Glaucophane | ◻[Na2][Mg3Al2]Si8O22(OH)2 |
| Na | Sodium | |
| Na | ⓘ Glaucophane | ◻[Na2][Mg3Al2]Si8O22(OH)2 |
| Mg | Magnesium | |
| Mg | ⓘ Glaucophane | ◻[Na2][Mg3Al2]Si8O22(OH)2 |
| Al | Aluminium | |
| Al | ⓘ Glaucophane | ◻[Na2][Mg3Al2]Si8O22(OH)2 |
| Si | Silicon | |
| Si | ⓘ Glaucophane | ◻[Na2][Mg3Al2]Si8O22(OH)2 |
Other Databases
| Link to USGS MRDS: | 10029562 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Coast MountainsMountain Range
North America PlateTectonic Plate
- California Coast RangesAccretionary Complex
- Franciscan DomainDomain
- Sonoma-Livermore BasinBasin
USA
- California
- Diablo RangeMountain Range
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