Big Bend Mine (Evening Star Mine; Evening Star claim; Pinkston Mine), Big Bend Mountain, Big Bend, Butte County, California, USAi
| Regional Level Types | |
|---|---|
| Big Bend Mine (Evening Star Mine; Evening Star claim; Pinkston Mine) | Mine |
| Big Bend Mountain | Mountain |
| Big Bend | Unincorporated Community |
| Butte County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° 41' 30'' North , 121° 25' 53'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Berry Creek | 1,424 (2011) | 5.7km |
| Yankee Hill | 333 (2011) | 7.9km |
| Concow | 710 (2011) | 9.2km |
| Paradise | 26,476 (2017) | 18.0km |
| Magalia | 11,310 (2011) | 18.4km |
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 |
|---|---|---|
| Paradise Gem & Mineral Club | Paradise, California | 18km |
| Feather River Lapidary & Mineral Society | Oroville, California | 23km |
A former Au-Ag-Pb-Cu-Zn-baryte mine located in the SE¼ sec. 8, T21N, R5E, MDM, 1.5 km (5,000 feet) ESE of Big Bend Mountain summit (coordinates of record) and 2.6 km (8,600 feet) ESE of Big Bend (town). Operated by E. F. Allingham, Rt. 1, Oroville, California. MRDS database stated accuracy for this location is 500 meters.
NOTE: The MRDS database combines the Big Bend Mine and the Evening Star claim in two files. The third file (#10103433) presents data for the Evening Star claim standing alone.
Mineralization is a replacement deposit (deposit model 184: massive sulphide, kuroko; USGS model code 28a; Mark3 model number 93), hosted in greenstone, amphibolite and schist. The ore body strikes N30W and dips 62NE at a thickness of 1.07 meters. Alteration at the Evening Star claim is local. In adits and crosscuts, a thickness of 50 feet or more is leached and altered to a soft mass of clay and silica. Small crusts of azurite and malachite occur in the leached zone near the surface. Local rocks include Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains).
Workings include underground openings with a total length of 294.44 meters.
They are comprised of a 134 foot deep shaft and a 360 foot deep shaft plus 472 feet of drifts. At the Evening Star claim there is a 120 foot adit on strike of the vein. 50 feet from the portal, a winze was sunk 12 feet in the adit floor.
Production data are found in: Logan (1930), and in Goodwin (1957). Individual commodity information is from the Southern Pacific Co. (McCulloch, W.C., Oesterling, W.A., Spurck, W.H., & Tischler, M.S. (1964): 63).
Analytical data results: 6 foot thickness of vein said to carry $4 to $5 of free gold (period values). An 8 inch thiockness is said to assay 6.62% to 13% Cu, 1 to 5 ounces of silver, 80 (?) Au, and some zinc. Production history details recovery percentages: Ore Cu: 2 weight per cent; Pb: 0.2 weight per cent; and, Zn: 12 weight per cent.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
Mineral list contains entries from the region specified including sub-localities13 valid minerals.
Detailed Mineral List:
| ⓘ Azurite Formula: Cu3(CO3)2(OH)2 Description: Occurs near surface in the altered zone at the Evening Star claim. |
| ⓘ Baryte Formula: BaSO4 References: |
| ⓘ Bornite Formula: Cu5FeS4 |
| ⓘ Chalcocite Formula: Cu2S |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Covellite Formula: CuS |
| ⓘ Galena Formula: PbS |
| ⓘ Gold Formula: Au |
| ⓘ Malachite Formula: Cu2(CO3)(OH)2 Description: Occurs near surface in the altered zone at the Evening Star claim. |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 Localities: Description: Gangue mineral. |
| ⓘ Silver Formula: Ag |
| ⓘ Sphalerite Formula: ZnS |
| ⓘ 'Tetrahedrite Subgroup' Formula: Cu6(Cu4C2+2)Sb4S12S |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Gold | 1.AA.05 | Au |
| ⓘ | Silver | 1.AA.05 | Ag |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Chalcocite | 2.BA.05 | Cu2S |
| ⓘ | Bornite | 2.BA.15 | Cu5FeS4 |
| ⓘ | Covellite | 2.CA.05a | CuS |
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | 'Tetrahedrite Subgroup' | 2.GB.05 | Cu6(Cu4C2+2)Sb4S12S |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Azurite | 5.BA.05 | Cu3(CO3)2(OH)2 |
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Baryte | 7.AD.35 | BaSO4 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| C | Carbon | |
| C | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| O | ⓘ Baryte | BaSO4 |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Baryte | BaSO4 |
| S | ⓘ Bornite | Cu5FeS4 |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Chalcocite | Cu2S |
| S | ⓘ Covellite | CuS |
| S | ⓘ Galena | PbS |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Sphalerite | ZnS |
| S | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Fe | Iron | |
| Fe | ⓘ Bornite | Cu5FeS4 |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| Cu | ⓘ Bornite | Cu5FeS4 |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Chalcocite | Cu2S |
| Cu | ⓘ Covellite | CuS |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
| Cu | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| Ag | Silver | |
| Ag | ⓘ Silver | Ag |
| Sb | Antimony | |
| Sb | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Ba | Barium | |
| Ba | ⓘ Baryte | BaSO4 |
| Au | Gold | |
| Au | ⓘ Gold | Au |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS MRDS: | 10028479 |
|---|
Localities in this Region
- California
- Butte County
- Big Bend
- Big Bend Mountain
- Big Bend Mine (Evening Star Mine; Evening Star claim; Pinkston Mine)
- Big Bend Mountain
- Big Bend
- Butte County
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Foothills-Wallowa DomainDomain
- Sierra Nevada BatholithVolcanic Arc
USA
- Sierra NevadaMountain Range
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References
