Tv Bas Occurrence, Delta River Mining District, Southeast Fairbanks Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Tv Bas Occurrence | Occurrence |
| Delta River Mining District | Mining District |
| Southeast Fairbanks Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
63° 13' 51'' North , 146° 10' 22'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Location: The Tv Bas occurrence is at an elevation of about 4,400 feet 3.3 miles north of the east tip of Sevenmile Lake. It is just inside the northwest corner of section 35, T. 19 S., R. 8 E., Fairbanks Meridian. The location is accurate within 0.2 mile.
Geology: The TV Bas occurrence is in outcrop and rubble crop of Tertiary gray to red-brown, locally vesicular olivine basalt that unconformably overlies mafic-ultramafic rocks of the Fish Lake complex of Late Triassic age (Nokleberg and others, 1991). The basalt is porphyritic; light green olivine phenocrysts occur in a fine-grained matrix. Vesicles contain epidote, zeolite (?), pyrite, and chalcopyrite fillings (W.T. Ellis, oral communication, 2001). Grab samples of vesicular basalt contain as much as 254 parts per million copper.
Workings: The occurrence is on active Fort Knox Gold Resource claims.
Age: Tertiary.
Alteration: Epidote and zeolite (?) filling in vesicles.
Commodities (Major) - Cu
Development Status: None
Deposit Model: Unclassified.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
3 valid minerals.
Detailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ 'Zeolite Group' |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 9 - Silicates | |||
| ⓘ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ | 'Zeolite Group' | 9.G0. | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | Oxygen | |
| O | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Al | Aluminium | |
| Al | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | Silicon | |
| Si | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| S | Sulfur | |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Pyrite | FeS2 |
| Ca | Calcium | |
| Ca | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
| Link to USGS - Alaska: | MH173 |
|---|
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