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Russian Bear Prospect, Copper Harbor, Hetta Inlet, Prince of Wales Island, Ketchikan Mining District, Prince of Wales-Hyder Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
55° 13' 21'' North , 132° 35' 5'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Hydaburg | 391 (2017) | 15.5km |
| Hollis | 112 (2011) | 37.3km |
| Thorne Bay | 483 (2017) | 51.9km |
The Russian Bear prospect 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: The location of the Russian Bear provided by Wright and Wright (1908) is unclear. They say that it is at an elevation of 100 feet about a mile northeast of the Gould Group (CR156). Their location of the Gould Group seems fairly unambiguous, but for the Russian Bear to be at an elevation of 100 feet, i.e. just above the shoreline, it would have to be west of the Gould Group. Neither location for the Russian Bear is consistent with the geology described below. For this record, the Russian Bear prospect is somewhat arbitrarily plotted about a half-mile northeast of the Gould Group at an elevation of about 1,000 feet, near the center of section 3, T. 77 S., R. 85 E. In support of this location, Herreid and others (1978) map skarn along a contact at this site and show unidentified workings nearby. Probably the best that can be said with certainty is that the Russian Bear prospect is near the head of Copper Harbor.
Geology: As described by Wright and Wright (1908), the Russian Bear claim is a contact-metamorphic copper deposit near a granitic batholith. The claim has been explored by trenches and open cuts. The deposit undoubtedly is similar to other contact-metamorphic copper deposits in the vicinity (for example, CR152 and 156). As mapped by Herreid and others (1978), the deposit is near the contact between Cretaceous granodiorite and albite-epidote hornfels; garnetiferous skarn is locally developed near the contact, where there are workings at several locations.
Workings: Apparently only trenches and open cuts prior to WW I.
Age: Probably Cretaceous.
Alteration: Garnet-bearing skarn developed near contact of Cretaceous granodiorite.
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 |
| ⓘ 'Garnet Group' Formula: X3Z2(SiO4)3 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| Unclassified | |||
| ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Garnet Group | X3Z2(SiO4)3 |
| Si | Silicon | |
| Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
| S | Sulfur | |
| S | ⓘ Chalcopyrite | CuFeS2 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
| Link to USGS - Alaska: | CR155 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Alexander DomainDomain
- Alexander TerraneVolcanic Arc
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