Unnamed Occurrence (ARDF - SR233; Knight Island; northwest of the head of Snug Harbor), Prince William Sound Mining District, Valdez-Cordova Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
60° 16' 35'' North , 147° 46' 40'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: The occurrence is located at an elevation of 1,500 feet and about a mile northwest of the head of Snug Harbor. It is located in the SE1/4 section 7, T. 2 N., R. 10 E., of the Seward Meridian, at an approximate elevation of 1,500 feet. This is location 141 of MacKevett and Holloway (1977), location 237 of Cobb and Tysdal (1980), and location S-42 of Jansons and others (1984). This location is accurate to within a quarter of a mile.
Geology: Nelson and others (1985) mapped bedrock in this area as Orca Group of early Teriary age. The occurrence consists of a north-south-trending 30-foot-wide shear zone that cuts greenstone. The shear zone contains as much as 5 percent pyrrhotite and traces of chalcopyrite. A chip sample across the zone contained 14 ppm copper and 50 ppm zinc (Kurtak and Jeske, 1986).
Workings: A single chip sample taken across a 30-foot-wide shear zone contained 14 ppm copper and 50 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: None
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
2 valid minerals.
Detailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Pyrrhotite Formula: Fe1-xS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Pyrrhotite | Fe1-xS |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrrhotite | Fe1-xS |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
| Link to USGS - Alaska: | SR233 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Prince WilliamAccretionary Complex
- Yakutat-Malaspina DomainDomain
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