Cora Blanca Area Mine (New Almaden - Cora Blanca area), New Almaden, New Almaden Mining District, Santa Clara County, California, USAi
| Regional Level Types | |
|---|---|
| Cora Blanca Area Mine (New Almaden - Cora Blanca area) | Mine |
| New Almaden | - not defined - |
| New Almaden Mining District | Mining District |
| Santa Clara County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
37° 10' 27'' North , 121° 50' 7'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Lexington Hills | 2,421 (2011) | 12.2km |
| Seven Trees | 1,788 (2018) | 12.4km |
| Cambrian Park | 3,282 (2018) | 12.5km |
| Communications Hill | 11,267 (2019) | 12.9km |
| Los Gatos | 30,705 (2017) | 13.6km |
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 | 50km |
A former Hg occurrence/mine located 1.3 km (0.8 mile) W of New Almaden, along Deep Gulch, on county land (Almaden Quicksilver County Park). Discovered prior to 1859. MRDS database accuracy for this location is not stated.
The ore body is a blanket formation that strikes NNE and dips W. Controls for ore emplacement included a serpentine-tuff contact in Franciscan rocks. Local alteration includes silica carbonate alteration of serpentine. Local rocks include rocks of the Franciscan Complex, unit 1 (Coast Ranges).
Local geologic structures include local fracturing.
Workings include unspecified surface and underground openings with a length of 3,048 meters (the topo map reflects 1 adit symbol at this point).
Production data are found in: Bailey and 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
3 valid minerals.
Detailed Mineral List:
| ⓘ Cinnabar Formula: HgS |
| ⓘ Dolomite Formula: CaMg(CO3)2 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ 'Serpentine Subgroup' Formula: D3[Si2O5](OH)4 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Cinnabar | 2.CD.15a | HgS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Dolomite | 5.AB.10 | CaMg(CO3)2 |
| Unclassified | |||
| ⓘ | 'Serpentine Subgroup' | - | D3[Si2O5](OH)4 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| C | Carbon | |
| C | ⓘ Dolomite | CaMg(CO3)2 |
| O | Oxygen | |
| O | ⓘ Dolomite | CaMg(CO3)2 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| Mg | Magnesium | |
| Mg | ⓘ Dolomite | CaMg(CO3)2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| S | Sulfur | |
| S | ⓘ Cinnabar | HgS |
| Ca | Calcium | |
| Ca | ⓘ Dolomite | CaMg(CO3)2 |
| Hg | Mercury | |
| Hg | ⓘ Cinnabar | HgS |
Other Databases
| Link to USGS MRDS: | 10040743 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Coast MountainsMountain Range
North America PlateTectonic Plate
- California Coast RangesAccretionary Complex
- Franciscan DomainDomain
USA
- California
- Santa Cruz MountainsMountain Range
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