Lyford Mine (Lynford), Buscones Peak, Blind Spring Hill, Benton, Blind Spring Mining District (Blind Spring Hill Mining District; Benton Mining District), Benton Range, Mono County, California, USAi
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Latitude & Longitude (WGS84):
37° 46' 46'' North , 118° 28' 59'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Benton | 280 (2011) | 4.4km |
| Sunny Slopes | 182 (2017) | 28.9km |
| Swall Meadows | 220 (2017) | 33.5km |
| Dyer | 259 (2011) | 38.7km |
| Mesa | 251 (2011) | 40.4km |
A former Ag-Cu-Pb mine located in the N½SE¼ sec. 18 and in sec. 20, T2S, R32E, MDM, 0.8 km (2,500 feet) ENE of Buscones Peak, along Lyford Gulch (head of Lynford Gulch on Blind Spring Hill), on National Forest land. Property consisted of 5 claims. The MRDS stated accuracy for this location is 5,000 meters (NOTE: Only one MRDS file - the least informative).
Mineralization is hosted in granodiorite. The ore body is comprised of irregular lenses and strikes N15W and dips 2-35E at a thickness of 0.91 meters. The vein is 1 to 3 feet (0.3 to 0.9 meters) thick. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges).
Local structures include a fault, striking N45W and dipping N, cuts the vein. The fault is 50 Feet wide, filled with breccia having nearly white clay casings and exhibiting slickenside surfaces and striations.
Workings include underground openings comprised of a 400 foot tunnel with 2 shorter tunnels, 100 and 250 feet in length. Ore in the tunnel ends at the fault. There is also a 500 foot crosscut.
Production data are found in: Goodwin (1957).
Production information: Lyford is credited with a production of over $200,000 in Ag (period values). No official production record found.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Cerussite Formula: PbCO3 References: |
| ⓘ Chalcopyrite Formula: CuFeS2 References: |
| ⓘ Galena Formula: PbS References: |
| ⓘ Pyrargyrite Formula: Ag3SbS3 References: |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Stephanite Formula: Ag5SbS4 References: |
| ⓘ Stromeyerite Formula: AgCuS References: |
| ⓘ 'Tetrahedrite Subgroup' Formula: Cu6(Cu4C2+2)Sb4S12S References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Stromeyerite | 2.BA.40 | AgCuS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrargyrite | 2.GA.05 | Ag3SbS3 |
| ⓘ | 'Tetrahedrite Subgroup' | 2.GB.05 | Cu6(Cu4C2+2)Sb4S12S |
| ⓘ | Stephanite | 2.GB.10 | Ag5SbS4 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Cerussite | 5.AB.15 | PbCO3 |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | ⓘ Cerussite | PbCO3 |
| O | Oxygen | |
| O | ⓘ Cerussite | PbCO3 |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Galena | PbS |
| S | ⓘ Pyrargyrite | Ag3SbS3 |
| S | ⓘ Stephanite | Ag5SbS4 |
| S | ⓘ Stromeyerite | AgCuS |
| S | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Stromeyerite | AgCuS |
| Cu | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Ag | Silver | |
| Ag | ⓘ Pyrargyrite | Ag3SbS3 |
| Ag | ⓘ Stephanite | Ag5SbS4 |
| Ag | ⓘ Stromeyerite | AgCuS |
| Sb | Antimony | |
| Sb | ⓘ Pyrargyrite | Ag3SbS3 |
| Sb | ⓘ Stephanite | Ag5SbS4 |
| Sb | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Pb | Lead | |
| Pb | ⓘ Cerussite | PbCO3 |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS MRDS: | 10076904 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mojave DomainDomain
- Northern Basin and RangeWide Rift
USA
- Sierra NevadaMountain Range
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060510084
