Aurora Mine (Morning Star), Idria Peak, San Benito County, California, USAi
| Regional Level Types | |
|---|---|
| Aurora Mine (Morning Star) | Mine |
| Idria Peak | Peak |
| San Benito County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
36° 23' 42'' North , 120° 40' 23'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Three Rocks | 246 (2011) | 27.9km |
| Cantua Creek | 466 (2011) | 34.0km |
| Coalinga | 16,564 (2017) | 39.9km |
| San Lucas | 269 (2015) | 42.9km |
| King City | 13,902 (2017) | 45.3km |
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 |
|---|---|---|
| Coalinga Rockhound Society | Coalinga, California | 40km |
A former Hg-Cr-Ni occurrence/mine located in the NW¼NE¼ sec. 5, T18S, R12E, MDM, 1.4 km (0.9 mile) ESE of Idria Peak (coordinates of record) and 2.4 km (1.5 miles; 8,000 feet) S of Idria, along the San Carlos Creek. Discovered in 1853. Owned by E.P. Jarrett. Operated by R. Piaz, J. Carillo (1952- ). Produced during the periods 1853 to 1911, 1915, 1917, 1930 to 1943, and 1950 to 1961. MRDS database stated accuracy for this location is 100 meters.
Mineralization is hosted in the New Idria serpentinite body (Franciscan Jurassic serpentine and sandstone; Panoche Upper Cretaceous sandstone and shale). Local alteration includes the silica-carbonate alteration of serpentine. The ore body is irregular, strikes NW and dips SW at a width of 30.48 meters and a length of 121.92 meters. Controls for ore emplacement
included shear zones in serpentine containing silica-carbonate rock. Local rocks include ultramafic rocks, chiefly Mesozoic, unit 3 (Coast Ranges and Western Klamath Mountains).
Regional geologic structures include the N70W Coalinga anticline and New Idria thrust. Local structures include a fault striking N45W.
Workings include surface and underground openings with a length of 487.68 meters.
Production data are found in: U.S. Bureau of Mines records.
Production statistics: Year: 1962 (period = through 1962): Hg (estimated): ^5-10 pounds Hg/ton (3,388 grams/ metric ton).
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
6 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:
| ⓘ Andradite Formula: Ca3Fe3+2(SiO4)3 References: Vandall KingIdentified by Van King: Dealer/Collection Label |
| ⓘ Calcite Formula: CaCO3 References: |
| ⓘ Cinnabar Formula: HgS References: |
| ⓘ Clinochlore Formula: Mg5Al(AlSi3O10)(OH)8 References: Vandall KingIdentified by Van King: Dealer/Collection Label |
| ⓘ Magnesiochromite Formula: MgCr2O4 |
| ⓘ Népouite Formula: Ni3Si2O5(OH)4 References: |
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 | |||
| ⓘ | Magnesiochromite | 4.BB.05 | MgCr2O4 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| Group 9 - Silicates | |||
| ⓘ | Andradite | 9.AD.25 | Ca3Fe3+2(SiO4)3 |
| ⓘ | Clinochlore | 9.EC.55 | Mg5Al(AlSi3O10)(OH)8 |
| ⓘ | Népouite | 9.ED.15 | Ni3Si2O5(OH)4 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| H | ⓘ Népouite | Ni3Si2O5(OH)4 |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Andradite | Ca3Fe23+(SiO4)3 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| O | ⓘ Magnesiochromite | MgCr2O4 |
| O | ⓘ Népouite | Ni3Si2O5(OH)4 |
| Mg | Magnesium | |
| Mg | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| Mg | ⓘ Magnesiochromite | MgCr2O4 |
| Al | Aluminium | |
| Al | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| Si | Silicon | |
| Si | ⓘ Andradite | Ca3Fe23+(SiO4)3 |
| Si | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| Si | ⓘ Népouite | Ni3Si2O5(OH)4 |
| S | Sulfur | |
| S | ⓘ Cinnabar | HgS |
| Ca | Calcium | |
| Ca | ⓘ Andradite | Ca3Fe23+(SiO4)3 |
| Ca | ⓘ Calcite | CaCO3 |
| Cr | Chromium | |
| Cr | ⓘ Magnesiochromite | MgCr2O4 |
| Fe | Iron | |
| Fe | ⓘ Andradite | Ca3Fe23+(SiO4)3 |
| Ni | Nickel | |
| Ni | ⓘ Népouite | Ni3Si2O5(OH)4 |
| Hg | Mercury | |
| Hg | ⓘ Cinnabar | HgS |
Other Databases
| Link to USGS MRDS: | 10040906 |
|---|
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
- Diablo RangeMountain Range
- San Benito County
- New Idria Mining DistrictMining District
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Aurora Mine, Idria Peak, San Benito County, California, USA