Unnamed Occurrence (ARDF - SB013; on Nagai Island), Aleutians East Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - SB013; on Nagai Island) | - not defined - |
| Aleutians East Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
55° 12' 35'' North , 159° 52' 47'' West
Latitude & Longitude (decimal):
Köppen climate type:
This occurrence is located on lands selected by the Aleut Corporation.
Location: This occurrence is located on Nagai Island near the point between Northwest Bight and Pirate Shake. The site is 0.3 mile west-northwest of triangulation station Wreck. It is referred to as SBRGX-39 in Wilson and others (1988, locality 13). The location is accurate to within 1,200 feet.
Geology: The country rocks at this site are sedimentary strata of the Lower Cretaceous Shumagin Formation (Wilson and others, 1995). The sedimentary rocks are intruded by a pyritized granodiorite sill. Anomalous values in arsenic, copper, and zinc have been reported both in sedimentary rock and in the intrusive (Wilson and others, 1988).
Workings: Rock samples 84ACe102a-c collected by the U. S. Geological Survey in the mid-1980's, were reported to be anomalous in arsenic, copper, and zinc (Wilson and others, 1988).
Alteration: Pyritization.
Commodities (Major) - Cu, Zn; (Minor) - As
Development Status: None
Commodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.List of minerals for each chemical element
Other Databases
| Link to USGS - Alaska: | SB013 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Chugach DomainAccretionary Complex
Pacific OceanOcean
USA
- Alaska
- Alaska Peninsula Mining DistrictMining District
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