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Unnamed Occurrence (ARDF - JU254; near Salmon River), Admiralty Mining District, Hoonah-Angoon Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - JU254; near Salmon River) | - not defined - |
| Admiralty Mining District | Mining District |
| Hoonah-Angoon Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
58° 4' 1'' North , 134° 27' 28'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Juneau | 32,756 (2017) | 26.2km |
Location: This occurrence is at an elevation of approximately 1,600 feet, 4.5 miles southeast of Eagle Peak, 3.5 miles south of Young Lake, and 3 miles west of the Salmon River. It is in the SE1/4 section 9, T. 44 S., R. 67 E. of the Copper River Meridian. The location is accurate within 1/4 mile.
Geology: This prospect consists of pegmatite veins in granite, migmatite, and contact-metamorphic rocks. X-ray spectroscopic analysis of heavy mineral concentrates from samples of the pegmatite veins indicate the presence of yttrium, zirconium, niobium, thorium, lanthanum, cerium, praseodymium and neodymium (Lathram and others, 1965). Wells and others (1986) show active claims at this site in 1985. The rocks in the general area are Upper Jurassic to mid-Cretaceous, marine argillite and graywacke, interbedded with andesitic to basaltic volcanic and volcaniclastic rocks, and subordinate polymictic conglomerate. The rocks are intruded by Cretaceous plutons, including granodiorite, quartz diorite, dunite, and peridotite (Gehrels and Berg, 1994).
Workings: Surface sampling only.
Commodities (Major) - REE (yttrium, zirconium, niobium, thorium, l
Development Status: No
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: | JU254 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Alexander DomainDomain
- Alexander TerraneVolcanic Arc
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