Antimony Peak deposit (San Emigdio Mine; San Emigdio-Antimony Peak; Antimony Peak Mine), Antimony Peak, Kern County, California, USAi
| Regional Level Types | |
|---|---|
| Antimony Peak deposit (San Emigdio Mine; San Emigdio-Antimony Peak; Antimony Peak Mine) | Deposit |
| Antimony Peak | Peak |
| Kern County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
34° 52' 50'' North , 119° 7' 0'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Pine Mountain Club | 2,315 (2017) | 4.8km |
| Lake of the Woods | 917 (2011) | 13.0km |
| Frazier Park | 2,691 (2011) | 16.9km |
| Lebec | 1,468 (2011) | 23.4km |
| Mettler | 136 (2011) | 24.4km |
A former Sb-Ag occurrence/mine located in secs. 9 & 10, T9N, R21W, SBM, on the N & E slopes of Antimony Peak, 12 miles SW of Sunset and 5 miles NW of Cuddy Valley, about 8 miles NW of Frazier Park, on private (patented) land within a National Forest area. Discovered in 1853. First produced in 1888. Owned by Tenneco Oil Exploration and Production Company (100%), Arizona (1982). MRDS database stated accuracy for this location is 10 meters. Mined in 1895, caved by 1912 and extensive work done in 1915.
Mineralization is a vein deposit hosted in granodiorite. The ore body is podiform or reniform shaped at a thickness of 4.7 meters, a width of 45.72 meters and a length of 762 meters, striking N40W and dipping 55S. The depth-to-top is 1 meter. Ore body No. 1 is a shear zone and tabular. Ore body No. 2 is lenticular and ore body No. 3 is irregular. The primary mode of origin was hydrothermal activity. Primary ore control was faulting. Wallrock alteration is slight. The vein can be traced for 4,000 feet. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges).
Local geologic structures include the Antimony Peak Fault (the mine is on the SE end of this steep thrust fault); and the Antimony Peak syncline. Regional features include the San Andreas Fault.
Workings include underground openings with a length of 1,222 meters and an overall depth of 122 meters, and comprised of 1 shaft and 2 adits (1983).
Production data are found in: White, D.E. (1962).
Production statistics: Year: 1882: 54 metric tons of ore. Year: 1911: 227 metric tons of ore.
Reserves and resources: Type: in-situ (estimate year = 1983): inferred: 221,000 metric tons of ore; demonstrated: 156,000 metric tons of ore; indicated: 156,000 metric tons of ore. Total resources: 377,000 metric tons of ore. Sb @ 2.7299 weight percent (1983). (see MRDS file #10139639)
Analytical data results: Cu: 0.02%; Pb: 0.05%; Au: trace; Ag - 0.18 ounce/ton; results: average Sb: 2.5% (53 foot length); 4.8% (6.1 foot width).
Mineralization is a vein deposit hosted in granodiorite. The ore body is podiform or reniform shaped at a thickness of 4.7 meters, a width of 45.72 meters and a length of 762 meters, striking N40W and dipping 55S. The depth-to-top is 1 meter. Ore body No. 1 is a shear zone and tabular. Ore body No. 2 is lenticular and ore body No. 3 is irregular. The primary mode of origin was hydrothermal activity. Primary ore control was faulting. Wallrock alteration is slight. The vein can be traced for 4,000 feet. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges).
Local geologic structures include the Antimony Peak Fault (the mine is on the SE end of this steep thrust fault); and the Antimony Peak syncline. Regional features include the San Andreas Fault.
Workings include underground openings with a length of 1,222 meters and an overall depth of 122 meters, and comprised of 1 shaft and 2 adits (1983).
Production data are found in: White, D.E. (1962).
Production statistics: Year: 1882: 54 metric tons of ore. Year: 1911: 227 metric tons of ore.
Reserves and resources: Type: in-situ (estimate year = 1983): inferred: 221,000 metric tons of ore; demonstrated: 156,000 metric tons of ore; indicated: 156,000 metric tons of ore. Total resources: 377,000 metric tons of ore. Sb @ 2.7299 weight percent (1983). (see MRDS file #10139639)
Analytical data results: Cu: 0.02%; Pb: 0.05%; Au: trace; Ag - 0.18 ounce/ton; results: average Sb: 2.5% (53 foot length); 4.8% (6.1 foot width).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Cervantite Formula: Sb3+Sb5+O4 |
| ⓘ Gypsum Formula: CaSO4 · 2H2O Description: Occurs in thin seams with poorly- to well-formed crystals. References: |
| ⓘ Kermesite Formula: Sb2S2O |
| ⓘ Native Antimony Formula: Sb |
| ⓘ Native Sulphur Formula: S8 Description: Occurs as small, euhedral crystals. |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Senarmontite Formula: Sb2O3 Habit: Micro-octahedra; parallel growth at times. Description: Occurs in fissures of massive stibnite. |
| ⓘ Stibiconite Formula: Sb3+Sb5+2O6(OH) Colour: Yellow to orange Description: Occurs massive and as pseudomorphs after stibnite. |
| ⓘ Stibnite Formula: Sb2S3 References: |
| ⓘ Valentinite Formula: Sb2O3 Habit: Prismatic; fan-shaped aggregates of thin plates. Colour: White, cream, pale yellow Description: Occurs as prismatic crystals, fan-shaped aggregates of thin plates and also as massive material. |
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Antimony | 1.CA.05 | Sb |
| ⓘ | Native Sulphur | 1.CC.05 | S8 |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Stibnite | 2.DB.05 | Sb2S3 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Kermesite | 2.FD.05 | Sb2S2O |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Senarmontite | 4.CB.50 | Sb2O3 |
| ⓘ | Valentinite | 4.CB.55 | Sb2O3 |
| ⓘ | Cervantite | 4.DE.30 | Sb3+Sb5+O4 |
| ⓘ | Stibiconite | 4.DH.20 | Sb3+Sb5+2O6(OH) |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Gypsum | 7.CD.40 | CaSO4 · 2H2O |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Gypsum | CaSO4 · 2H2O |
| H | ⓘ Stibiconite | Sb3+Sb25+O6(OH) |
| O | Oxygen | |
| O | ⓘ Cervantite | Sb3+Sb5+O4 |
| O | ⓘ Gypsum | CaSO4 · 2H2O |
| O | ⓘ Kermesite | Sb2S2O |
| O | ⓘ Senarmontite | Sb2O3 |
| O | ⓘ Stibiconite | Sb3+Sb25+O6(OH) |
| O | ⓘ Valentinite | Sb2O3 |
| S | Sulfur | |
| S | ⓘ Gypsum | CaSO4 · 2H2O |
| S | ⓘ Kermesite | Sb2S2O |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Stibnite | Sb2S3 |
| S | ⓘ Native Sulphur | S8 |
| Ca | Calcium | |
| Ca | ⓘ Gypsum | CaSO4 · 2H2O |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
| Sb | Antimony | |
| Sb | ⓘ Native Antimony | Sb |
| Sb | ⓘ Cervantite | Sb3+Sb5+O4 |
| Sb | ⓘ Kermesite | Sb2S2O |
| Sb | ⓘ Senarmontite | Sb2O3 |
| Sb | ⓘ Stibiconite | Sb3+Sb25+O6(OH) |
| Sb | ⓘ Stibnite | Sb2S3 |
| Sb | ⓘ Valentinite | Sb2O3 |
Other Databases
| Link to USGS MRDS: | 10107763 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Coast MountainsMountain Range
North America Plate
- Great Valley DomainDomain
- Sierra Nevada BatholithVolcanic Arc
Pacific PlateTectonic Plate
USA
- California
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file #0060290012
Anue, Q.A. (1957), Antimony in California and Nevada, U.S. Bureau of Mines report (unpublished): 65.
Antimony Peak deposit, Antimony Peak, Kern County, California, USA