Unnamed Prospect (ARDF - SR264; east of Marsha Bay), Prince William Sound Mining District, Valdez-Cordova Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Prospect (ARDF - SR264; east of Marsha Bay) | - not defined - |
| Prince William Sound Mining District | Mining District |
| Valdez-Cordova Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
60° 20' 43'' North , 147° 40' 30'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: The prospect is located near tidewater on the east shore of Marsha Bay. It is in the SW1/4 section 14, T. 3 N., R. 10 E., of the Seward Meridian. This is location 214 of Tysdal (1978 [MF-880-A]) and location S-66 of Jansons and others (1984). This location is accurate to within a quarter of a mile.
Geology: The prospect consists of a 3-foot-wide mineralized dike that crosscuts sheared greenstone and chert of the Orca Group (Richter, 1965). The age of the dike is unknown. The dike contains disseminated pyrrhotite, pyrite, and chalcopyrite. Three samples of sheared greenstone and two of a basalt dike contained from 65 to 150 ppm copper and from 63 to 130 ppm zinc (Kurtak and Jeske, 1986).
Workings: Richter (1965) reported a small prospect pit, but it was not located by the U.S. Bureau of Mines when they investigated the prospect in the early 1980's. Three samples of sheared greenstone and two of a basalt dike contained from 65 to 150 ppm copper and from 63 to 130 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
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
4 valid minerals.
Detailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Pyrrhotite Formula: Fe1-xS |
| ⓘ Quartz Formula: SiO2 |
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 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Pyrrhotite | Fe1-xS |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Pyrrhotite | Fe1-xS |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
| Link to USGS - Alaska: | SR264 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Prince WilliamAccretionary Complex
- Yakutat-Malaspina DomainDomain
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