Central Stope Area Mine (New Almaden - Central Stope Area), New Almaden, New Almaden Mining District, Santa Clara County, California, USAi
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Latitude & Longitude (WGS84):
37° 10' 31'' North , 121° 50' 17'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Lexington Hills | 2,421 (2011) | 12.0km |
| Cambrian Park | 3,282 (2018) | 12.2km |
| Seven Trees | 1,788 (2018) | 12.3km |
| Communications Hill | 11,267 (2019) | 12.7km |
| Los Gatos | 30,705 (2017) | 13.4km |
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 |
|---|---|---|
| Santa Clara Valley Gem & Mineral Society | San Jose, California | 19km |
| Santa Cruz Mineral and Gem Society | Santa Cruz, California | 28km |
| Peninsula Gem & Geology Society, Inc. | Los Altos, California | 34km |
| Sequoia Gem and Mineral Society | Redwood City, California | 49km |
Mindat Locality ID:
92221
Long-form identifier:
mindat:1:2:92221:9
GUID (UUID V4):
0d64eca3-f396-4794-a8fc-e3320c7c6fc0
A former Hg occurrence/mine located 0.2 km (700 feet) SSE of New Almaden, on county land (Almaden Quicksilver County Park). First produced in 1846. MRDS database accuracy for this location is not stated. The highest part of Mine Hill is located on the main tunnel. Mined until 1945 but most ore was taken out before 1870. Now considered a part of the New Almaden Mine.
Mineralization is hosted in rocks of the Franciscan Complex (Late Cretaceous serpentinite). Controls for ore emplacement included the local fractures trending NE. Local alteration includes the silica carbonate alteration of serpentine. Local rocks include rocks of the Franciscan Complex, unit 1 (Coast Ranges).
Local geologic structures include a serpentine-sediment contact.
Workings include underground openings with a length of 7,620 meters.
Production data are found in: Bailey & Everhart (1964).
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
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:
| ⓘ Cinnabar Formula: HgS |
| ⓘ Mercury Formula: Hg |
| ⓘ 'Serpentine Subgroup' Formula: D3[Si2O5](OH)4 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Mercury | 1.AD.05 | Hg |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Cinnabar | 2.CD.15a | HgS |
| 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 | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| Si | Silicon | |
| Si | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| S | Sulfur | |
| S | ⓘ Cinnabar | HgS |
| Hg | Mercury | |
| Hg | ⓘ Cinnabar | HgS |
| Hg | ⓘ Mercury | Hg |
Other Databases
| Link to USGS MRDS: | 10040745 |
|---|
Other Regions, Features and Areas containing this locality
North America
- Coast MountainsMountain Range
North America PlateTectonic Plate
- Franciscan DomainDomain
USA
- California
- Santa Cruz MountainsMountain Range
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References
