Afterthought Mine, Ingot, East Shasta Copper - Zinc Mining District, Klamath Mountains, Shasta County, California, USAi
| Regional Level Types | |
|---|---|
| Afterthought Mine | Mine |
| Ingot | - not defined - |
| East Shasta Copper - Zinc Mining District | Mining District |
| Klamath Mountains | Mountain Range |
| Shasta County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
40° 44' North , 122° 5' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Round Mountain | 155 (2011) | 13.7km |
| Bella Vista | 2,781 (2011) | 16.2km |
| Montgomery Creek | 163 (2011) | 18.0km |
| Mountain Gate | 943 (2011) | 21.0km |
| Millville | 727 (2011) | 21.9km |
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 |
|---|---|---|
| Shasta Gem & Mineral Society | Redding, California | 31km |
Mindat Locality ID:
27934
Long-form identifier:
mindat:1:2:27934:8
GUID (UUID V4):
b0b86e0a-e455-4cde-98af-cc300cfc1b02
A former Zn-Cu-Ag-Au-Pb mine located in secs. 10, 11 & 15, T33N, R2W, MDM, 0.7 km (2,300 feet) NNW of Ingot and 24 miles E of Redding. Discovered in 1862. First production was 1873. Produced from 1905-1952. Closed in 1952. Owned by the Coronado Copper & Zinc Co. MRDS database accuracy for this location is not stated.
Mineralization is a massive sulphide body hosted in the Bully Hill Rhyolite (Deposit model: Model code 184; USGS model code 28a; Massive sulfide, kuroko, Mark3 model number: 93). The ore body is lenticular in form, strikes NW and dips steeply NE at a length of 121.92 meters. Ore emplacement controls included an intersection between rhyolite - metasedimentary contact and a series of Steeply-dipping strike faults.
The host rock is probably a rhyolite porphyry. Altered rocks contain significant quantities of albite, silica, hydrous mica, calcite and pyrite. Sulphide ore bodies replace sheared host rocks at the contact. 16 ore bodies composed of massive and banded sulphides.
Alteration is local and consists of slicification, pyritization, sericitization, carbonatization, and albitization.
Workings included underground openings with an overall depth of 222.2 meters and a length of 886.97 meters. The overall length of 17,200 feet includes drifts. crosscuts and stopes in addition to 2,200 feet of shafts. raises and winzes.
Production data are found in: Lydon P. A., and O'Brien, J. C. (1972).
Production statistics (1905-1952): ^3.23% Cu, 16.15% Zn, 2.17% Pb, 5.55 o/ton Ag, .03 oz/ton Au.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| β Azurite Formula: Cu3(CO3)2(OH)2 References: |
| β Baryte Formula: BaSO4 References: |
| β Bornite Formula: Cu5FeS4 Description: A little was found. References: |
| β Calcite Formula: CaCO3 References: |
| β Chalcocite Formula: Cu2S |
| β Chalcopyrite Formula: CuFeS2 |
| β Covellite Formula: CuS Description: An alteration product of bornite. References: |
| β Digenite Formula: Cu9S5 References: |
| β Dolomite Formula: CaMg(CO3)2 References: |
| β Galena Formula: PbS References: |
| β Luzonite Formula: Cu3AsS4 Description: Occurs as anhedral grains in chalcopyrite. References: |
| β Malachite Formula: Cu2(CO3)(OH)2 References: |
| β Muscovite Formula: KAl2(AlSi3O10)(OH)2 References: |
| β Muscovite var. Sericite Formula: KAl2(AlSi3O10)(OH)2 References: |
| β Pyrite Formula: FeS2 References: |
| β Quartz Formula: SiO2 References: |
| β Silver Formula: Ag Habit: Arborescent Description: Only a few specimens found. |
| β Sphalerite Formula: ZnS References: |
| β Tenorite Formula: CuO |
| β 'Tetrahedrite Subgroup' Formula: Cu6(Cu4C2+2)Sb4S12S References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| β | Silver | 1.AA.05 | Ag |
| Group 2 - Sulphides and Sulfosalts | |||
| β | Chalcocite | 2.BA.05 | Cu2S |
| β | Digenite | 2.BA.10 | Cu9S5 |
| β | Bornite | 2.BA.15 | Cu5FeS4 |
| β | Covellite | 2.CA.05a | CuS |
| β | Sphalerite | 2.CB.05a | ZnS |
| β | Chalcopyrite | 2.CB.10a | CuFeS2 |
| β | Galena | 2.CD.10 | PbS |
| β | Pyrite | 2.EB.05a | FeS2 |
| β | 'Tetrahedrite Subgroup' | 2.GB.05 | Cu6(Cu4C2+2)Sb4S12S |
| β | Luzonite | 2.KA.10 | Cu3AsS4 |
| Group 4 - Oxides and Hydroxides | |||
| β | Tenorite | 4.AB.10 | CuO |
| β | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| β | Calcite | 5.AB.05 | CaCO3 |
| β | Dolomite | 5.AB.10 | CaMg(CO3)2 |
| β | Azurite | 5.BA.05 | Cu3(CO3)2(OH)2 |
| β | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| β | Baryte | 7.AD.35 | BaSO4 |
| Group 9 - Silicates | |||
| β | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| β | var. Sericite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
List of minerals for each chemical element
Other Databases
| Link to USGS MRDS: | 10077520 |
|---|
Other Regions, Features and Areas containing this locality
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References
