Unnamed Occurrence (ARDF - SI131; southwest of Ushk Bay), Chichagof Mining District (Chicagof Mining District), Sitka, Alaska, USAi
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Latitude & Longitude (WGS84):
57° 31' 35'' North , 135° 44' 52'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Sitka | 8,863 (2017) | 58.3km |
Location: The location of this occurrence is only known approximately to be at an elevation of about 1,000 feet, about 3 miles southwest of the head of Ushk Bay. For this record, the site is plotted 0.6 mile northwest of the center of sec. 23, T. 50 S., R. 60 E. It is location P-93 of Bittenbender and others (1999) and MAS no. 0021140130 (U.S. Bureau of Land Management, 2002).
Geology: Johnson and Karl (1985) map the rocks in the area of this occurrence as Mesozoic or Paleozoic, amphibolite, gneiss, schist, and marble, and as undivided siliceous metasedimentary and metavolcanic rocks. The rocks are cut by high-angle, mainly northwest-striking faults. Bittenbender and others (1999), mainly citing Kimball (1982), describe the occurrence as a disseminated sulfide deposit in Triassic(?) greenstone and amphibolite. Samples contained up to 220 parts per million (ppm) copper, 0.7 ppm silver, and 100 ppm molybdenum.
Workings: Only limited surface sampling.
Commodities (Major) - Ag, Cu, Mo
Development Status: None
Deposit Model: Disseminated sulfide deposit.
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: | SI131 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Chugach DomainAccretionary Complex
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