HET; CPY Occurrences, Hetta Lake, Prince of Wales Island, Ketchikan Mining District, Prince of Wales-Hyder Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
55° 11' 38'' North , 132° 31' 15'' West
Latitude & Longitude (decimal):
Type:
Group of Occurrences
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Hydaburg | 391 (2017) | 19.5km |
| Hollis | 112 (2011) | 41.0km |
| Thorne Bay | 483 (2017) | 54.9km |
Mindat Locality ID:
197958
Long-form identifier:
mindat:1:2:197958:2
GUID (UUID V4):
6ac90d2e-8280-4ff5-b0e5-960623236d1f
These occurrences are on land whose surface and subsurface rights have been conveyed to, or are under application for transfer to, the Sealaska Corporation.
Location: The HET and CPY occurrences are about 0.6 mile northeast of the head of Hetta Lake at about 1,400 to 1,500 feet in elevation. They are about 0.6 mile west-northwest of the center of section 18, T. 77 S, R. 86 E.
Geology: The HET and CPY occurrences are near a thrust contact between outcops of hornfels (Herreid and others, 1978; Maas and others, 1991, 1995) A Cretaceous granodiorite intrusion crops out just to the south on the north side of Hetta Lake. The occurrences consist of chalcopyrite-bearing float. The highest copper value in 6 samples was 1,251 parts per million copper; gold was not detected.
Workings: Only surface sampling by government geologists.
Age: Probably Cretaceous.
Alteration: Development of hornfels.
Commodities (Major) - Cu
Development Status: None
Deposit Model: Copper skarn? (Cox and Singer, 1986; model 18b).
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
1 valid mineral.
Detailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Chalcopyrite | CuFeS2 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
| Link to USGS - Alaska: | CR159 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Alexander DomainDomain
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References
