Unnamed Occurrence (ARDF - CR114), Twelvemile Arm, Kasaan Bay, Prince of Wales Island, Ketchikan Mining District, Prince of Wales-Hyder Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - CR114) | - not defined - |
| Twelvemile Arm | - not defined - |
| Kasaan Bay | Bay |
| Prince of Wales Island | Island |
| Ketchikan Mining District | Mining District |
| Prince of Wales-Hyder Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
55° 18' 29'' North , 132° 40' 55'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Hydaburg | 391 (2017) | 14.5km |
| Hollis | 112 (2011) | 27.8km |
| Craig | 1,248 (2017) | 34.9km |
| Klawock | 765 (2017) | 37.7km |
| Thorne Bay | 483 (2017) | 43.4km |
This occurrence is on land that has been conveyed to the Sealaska Corporation, who hold the surface and subsurface rights, or the land is under application for transfer to them.
Location: This occurrence is locality 3 of Herreid and Rose (1966). It is about 3.5 miles southeast of the head of Twelvemile Arm, and about 0.3 mile west of the center of section 5, T. 76 S., R. 84 E.
Geology: This occurrence is a planar quartz vein about 1 inch thick that contains chalcopyrite (Herreid and Rose, 1966). The vein cuts highly deformed amygdaloidal greenstone marked by ptygmatically-folded quartz-calcite veins. The rocks in the vicinity are greenstone, greenschist, and minor calcareous metagraywacke; they are part of the Wales Group of Late Proterozoic and Cambrian age (Eberlein and others, 1983; Brew, 1996). A few hundred yards to the west, Herbert and Race (1964) found chalcopyrite in limestone; a sample contained 0.3 percent copper.
Age: Unknown other than that the mineralization is in rocks of Cambrian or older age.
Commodities (Major) - Cu
Deposit Model: Chalcopyrite in quartz vein in greenstone.
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
2 valid minerals.
Detailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Chalcopyrite | CuFeS2 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
| Link to USGS - Alaska: | CR114 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Alexander DomainDomain
- Alexander TerraneVolcanic Arc
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