Skagway Prospect, Skagway Mining District, Skagway, Alaska, USAi
| Regional Level Types | |
|---|---|
| Skagway Prospect | Prospect |
| Skagway Mining District | Mining District |
| Skagway | City Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
59° 28' 47'' North , 135° 16' 48'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Location: Freeman (1963) describes this prospect as located, '..on a steep hillside about 250 feet above the tracks of the White Pass and Yukon Railroad opposite the oil tanks of the Standard Oil Company of California.' Based on Freeman's description, the prospect appears to be located about 2 miles northeast of the Skagway ferry terminal, just east of the White Pass and Yukon Railroad tracks. Its location is probably accurate to within about 1/4 mile. It is shown as location 20 by Cobb (1972 [MF 424]).
Geology: The following description if from Freeman (1963). A small altered body of rhyolite(?) is surrounded by medium-grained quartz diorite. The quartz diorite is cut by several large faults and is intruded by fine-grained andesitic dikes. Uranium occurs adjacent to a prominent, steeply dipping fracture in the rhyolite(?), where it is associated with iron oxide staining and globules of clay that resemble vesicle fillings. The highest grade sample of olive-green clay that was probably hand picked from vesicles in the rhyolite(?), contained 0.72% equivalent uranium and 1.2% uranium. The amount of this material is very small and most of the mineralization consists of highly altered rhyolite(?) stained with red and yellowish brown iron oxides that contained up to 0.22% equivalent uranium. No sulfides or gangue minerals were seen except for specks of purple fluorite. The age of the mineralization is not well established, but it is probably Tertiary based on the Paleocene and Eocene ages (Brew and Ford, 1994) of the intrusive rocks in the area.
Workings: One prospect pit yielded a few hundred pounds of specimens, but when inspected by USGS in 1956 no ore was in sight (Berg and Cobb, 1967).
Age: Probably Tertiary based on the Paleocene and Eocene ages (Brew and Ford, 1994) of intrusive rocks in the area.
Alteration: Clay alteration of rhyolite (?), iron staining.
Commodities (Major) - U
Development Status: None
Deposit Model: Very little information. From the description of Freeman (1963), it is possibl
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: | SK021 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Coast MountainsMountain Range
North America PlateTectonic Plate
- Coast plutonic complexVolcanic Arc
- Taku DomainDomain
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