Cornucopia Mine, 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' 30'' North , 118° 29' 7'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Benton | 280 (2011) | 5.0km |
| Sunny Slopes | 182 (2017) | 28.3km |
| Swall Meadows | 220 (2017) | 32.9km |
| Dyer | 259 (2011) | 38.7km |
| Mesa | 251 (2011) | 39.9km |
A former Ag-Pb-Cu mine located in sec. 18, T2S, R32E, MDM, 0.6 km (1,900 feet) ESE of Buscones Hill (coordinates of record), at the head of Last Chance Gulch, on National Forest land (private land ?). MRDS database stated accuracy for this location is 10 meters.
Mineralization is hosted in granite. The ore body strikes N10-20W and dips 40-45E. A series of parallel fault fissures strike N-S. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges).
Production data are found in: Goodwin (1957).
Production information: A small amount of ore was produced in 1925. Smelter recovery ran 28% Pb and 24 ounces/ton Ag. The last known activity was in 1941, when some Ag was recovered.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Cerussite Formula: PbCO3 References: |
| ⓘ 'Cuproroméite' Formula: Cu2Sb2(O,OH)7 References: |
| ⓘ Dioptase ? Formula: CuSiO3 · H2O Description: Tentatively identified as crystals lining cavities in malachite. References: |
| ⓘ Galena Formula: PbS References: |
| ⓘ Malachite Formula: Cu2(CO3)(OH)2 References: |
| ⓘ 'Tetrahedrite Subgroup' Formula: Cu6(Cu4C2+2)Sb4S12S References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | 'Tetrahedrite Subgroup' | 2.GB.05 | Cu6(Cu4C2+2)Sb4S12S |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | 'Cuproroméite' | 4.DH.20 | Cu2Sb2(O,OH)7 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Cerussite | 5.AB.15 | PbCO3 |
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
| Group 9 - Silicates | |||
| ⓘ | Dioptase ? | 9.CJ.30 | CuSiO3 · H2O |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Dioptase | CuSiO3 · H2O |
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| H | ⓘ Cuproroméite | Cu2Sb2(O,OH)7 |
| C | Carbon | |
| C | ⓘ Cerussite | PbCO3 |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | ⓘ Cerussite | PbCO3 |
| O | ⓘ Dioptase | CuSiO3 · H2O |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | ⓘ Cuproroméite | Cu2Sb2(O,OH)7 |
| Si | Silicon | |
| Si | ⓘ Dioptase | CuSiO3 · H2O |
| S | Sulfur | |
| S | ⓘ Galena | PbS |
| S | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Cu | Copper | |
| Cu | ⓘ Dioptase | CuSiO3 · H2O |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
| Cu | ⓘ Cuproroméite | Cu2Sb2(O,OH)7 |
| Cu | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Sb | Antimony | |
| Sb | ⓘ Cuproroméite | Cu2Sb2(O,OH)7 |
| Sb | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Pb | Lead | |
| Pb | ⓘ Cerussite | PbCO3 |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS MRDS: | 10007215 |
|---|
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 #0060510193
Cornucopia Mine, Buscones Peak, Blind Spring Hill, Benton, Blind Spring Mining District, Benton Range, Mono County, California, USA