North Randol Mine, New Almaden, New Almaden Mining District, Santa Clara County, California, USAi
| Regional Level Types | |
|---|---|
| North Randol Mine | 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° 11' 6'' North , 121° 50' 31'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Cambrian Park | 3,282 (2018) | 11.2km |
| Seven Trees | 1,788 (2018) | 11.2km |
| Communications Hill | 11,267 (2019) | 11.6km |
| Lexington Hills | 2,421 (2011) | 11.8km |
| Los Gatos | 30,705 (2017) | 12.6km |
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 | 18km |
| Santa Cruz Mineral and Gem Society | Santa Cruz, California | 29km |
| Peninsula Gem & Geology Society, Inc. | Los Altos, California | 33km |
| Sequoia Gem and Mineral Society | Redwood City, California | 48km |
Mindat Locality ID:
92287
Long-form identifier:
mindat:1:2:92287:5
GUID (UUID V4):
a34f8e13-e315-4bf1-a5ea-8e24d809aa09
A former Hg occurrence/mine located in sec. 35, T8S, R1E, MDM, 2.1 km (1.3 miles) WNW of New Almaden, N of the Victoria shaft on Randol tunnel, on county owned land (Almaden Quicksilver County Park). Discovered in 1871. Operated from 1871 to 1896. MRDS database accuracy for this location is not stated.
Mineralization is hosted in rocks of the Franciscan Complex (Late Cretaceous serpentinite). The ore body is irregular, strikes E and dips 50N at a thickness of 7.62 meters, width of 60.96 meters and a length of 396.24 meters. Controls for ore emplacement included local fractures trending N. Local alteration includes silica carbonate alteration of serpentine. Local rocks include Mesozoic volcanic rocks, unit 1 (Coast Ranges).
Local geologic structures include a serpentine-sediment contact.
Workings include underground openings with a length of 8,046.5 meters.
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.
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 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Calcite | CaCO3 |
| S | Sulfur | |
| S | ⓘ Cinnabar | HgS |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Hg | Mercury | |
| Hg | ⓘ Cinnabar | HgS |
| Hg | ⓘ Mercury | Hg |
Other Databases
| Link to USGS MRDS: | 10040747 |
|---|
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
