Unnamed Prospect (ARDF - SR249; south end of Herring Bay; Knight Island), Prince William Sound Mining District, Valdez-Cordova Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
60° 24' 28'' North , 147° 43' 47'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
202441
Long-form identifier:
mindat:1:2:202441:0
GUID (UUID V4):
025a63d1-a412-4bcf-ae6c-fb40fce8991a
Location: The prospect is located a shallow, U-shaped valley in the easternmost arm at the south end of Herring Bay at an elevation of about 500 feet. It is in the W1/2 section 28, T. 4 N., R. 10 E., of the Seward Meridian. This is location S-73 of Jansons and others (1984). This location is accurate to within a quarter of a mile.
Geology: The prospect consists of a heavily iron-stained shear zone cutting greenstone. The zone contains minor pyrite and is exposed for 80 feet in a stream bottom (Kurtak and Jeske, 1986). This shear zone trends N15E and dips 70 to 80E (Kurtak and Jeske, 1986). Nelson and others (1985) mapped the greenstone county rock as Orca Group of early Teriary age. Two random chip samples from the shear zone contained from 80 to 95 ppm copper and 50 to 150 ppm zinc (Kurtak and Jeske, 1986).
Workings: Two adits are reported: one is 5 feet long at an elevation of 450 feet, and the other is 6 feet long at an elevation of 550 feet (Kurtak and Jeske, 1986). Two random chip samples from the shear zone contained from 80 to 95 ppm copper and 50 to 150 ppm zinc (Kurtak and Jeske, 1986).
Age: Tertiary or younger; the mineralization is in rocks of the Orca Group of Tertiary age.
Commodities (Major) - Cu; (Minor) - Zn
Development Status: Undetermined.
Deposit Model: Cyprus massive sulfide (Cox and Singer, 1986; model 24a)
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
1 valid mineral.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts | |||
---|---|---|---|
ⓘ | Pyrite | 2.EB.05a | FeS2 |
Other Databases
Link to USGS - Alaska: | SR249 |
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Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Yakutat-Malaspina DomainDomain
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