Sharon Prospect, Ketchikan Gateway Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Sharon Prospect | Prospect |
| Ketchikan Gateway Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
55° 19' 51'' North , 131° 31' 4'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Saxman | 417 (2017) | 5.1km |
| Ketchikan | 8,197 (2017) | 8.3km |
| Metlakatla | 1,405 (2017) | 22.8km |
Location: This prospect is known only from U.S. Bureau of Mines (1977) claim records. Its approximate location is at an elevation of about 100 feet on Whitman Creek, about 0.3 mile north of the mouth of Herring Bay. The site is in section 25, T. 75 S., R. 91 E., of the Copper River Meridian. It corresponds to loc. 75 in Elliott and others (1978). The location is accurate within about 0.2 mile.
Geology: The country rocks in this part of Revillagigedo Island are mainly marine, andesitic or basaltic metavolcanic rocks and interbedded pelitic metasedimentary rocks that are intruded by Cretaceous sills and dikes of feldspar-porphyritic granodiorite, and by a stock of Tertiary gabbro (Berg and others, 1988). The strata and some of the granodiorite were regionally metamorphosed to greenschist grade in Late Cretaceous time, and subsequently remetamorphosed to hornblende hornfels near the contacts of the gabbro stock. The premetamorphic age of the strata is uncertain. Berg and others (1988) note that they closely resemble Upper Jurassic to mid-Cretaceous flysch and volcanic rocks nearby on Gravina Island. According to U.S. Bureau of Mines claim records (1977), this prospect, which appears to be in metasedimentary rocks near the contact of the gabbro stock, was staked for copper and zinc. No other information about it has been made public.
Commodities (Major) - Cu, Zn
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: | KC078 |
|---|
Other Regions, Features and Areas containing this locality
North America
- Coast MountainsMountain Range
North America PlateTectonic Plate
- Alexander TerraneVolcanic Arc
- Taku DomainDomain
USA
- Alaska
- Ketchikan Mining DistrictMining District
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