Unnamed Occurrence (ARDF - JU017; northwest of Mt. Young), Glacier Bay Mining District, Juneau Mining District, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - JU017; northwest of Mt. Young) | - not defined - |
| Glacier Bay Mining District | - not defined - |
| Juneau Mining District | Mining District |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
58° 54' 46'' North , 135° 38' 9'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: This occurrence is 4 miles northwest of Mt. Young at an elevation of approximately 4,500 feet. It is in the NE1/4 section 19, T. 34 S., R. 59 E. of the Copper River Meridian. The location is accurate within 1/2 mile. There are several other occurrences in the Mt. Young area (JU020, JU025); the locations given by Wells and others (1986) appear to be the most accurate.
Geology: This occurrence is in a geologically complex area characterized by a variety of metamorphic rocks, small granitic plutons, and mafic dikes (MacKevett and others,1971). Brew and Ford (1985) map the general area as predominantly Devonian and Silurian greenstone, greenschist, limestone and graywacke, intruded by Cretaceous biotite-hornblende granodiorite. The occurrence consists of several ankeritic altered zones between 5 and 30 feet thick that cut granitic rocks. Samples from these zones contained anomalous copper and molybdenum (MacKevett and others, 1971).
Workings: Only surface samples have been collected.
Age: Veins cut Cretaceous or younger plutonic rocks.
Alteration: Ankeritic altered zone.
Commodities (Major) - Cu, Mo
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: | JU017 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Coast MountainsMountain Range
North America PlateTectonic Plate
- Alexander DomainDomain
- Alexander TerraneVolcanic Arc
USA
- Alaska
- Juneau Mining DistrictMining District
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