Alameda Occurrence, Prince William Sound Mining District, Valdez-Cordova Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Alameda Occurrence | Occurrence |
| 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° 0' 6'' North , 147° 51' 57'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Mindat Locality ID:
196184
Long-form identifier:
mindat:1:2:196184:6
GUID (UUID V4):
7ddf690f-5673-478e-a98d-b6b6067aabba
Location: The occurrence is located in the SW1/4 section 14, T. 2 S., R. 9 E., of the Seward Meridian. It is near sea level along the shoreline, 0.7 mile southeast of Reynolds Peak, Latouche Island. This is location 267 of Tysdal (1978 [MF-880-A]) and location S-6 of Jansons and others (1984). This location is accurate to within a quarter of a mile.
Geology: The occurrence consists of two zones: a mineralized graywacke and a shear zone. The mineralized graywacke zone contains small bunches and stringers of chalcopyrite scattered though it. The zone varies from 4 to 40 feet wide and is traceable for some distance (Johnson, 1916 [B 662-C, p. 210-211]). North of the mineralized graywacke zone a 4-foot-wide shear zone is exposed for a short distance. This zone contains chalcopyrite, pyrrhotite, and sphalerite. Both zones are subparallel to the northeasterly strike and westerly dip of the host rock, which is graywacke of the Orca Group of early Teriary age (Nelson and others, 1985).
Workings: No workings or sampling are reported.
Age: Tertiary or younger; the mineralization is in rocks of the Orca Group of Tertiary age.
Commodities (Major) - Cu, Zn
Development Status: None
Deposit Model: Besshi massive sulfide (Cox and Singer, 1986; model 24b)
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:
| β Chalcopyrite Formula: CuFeS2 |
| β Pyrrhotite Formula: Fe1-xS |
| β Quartz Formula: SiO2 |
| β Sphalerite Formula: ZnS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| β | Sphalerite | 2.CB.05a | ZnS |
| β | Chalcopyrite | 2.CB.10a | CuFeS2 |
| β | Pyrrhotite | 2.CC.10 | Fe1-xS |
| Group 4 - Oxides and Hydroxides | |||
| β | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | β Quartz | SiO2 |
| Si | Silicon | |
| Si | β Quartz | SiO2 |
| S | Sulfur | |
| S | β Chalcopyrite | CuFeS2 |
| S | β Pyrrhotite | Fe1-xS |
| S | β Sphalerite | ZnS |
| Fe | Iron | |
| Fe | β Chalcopyrite | CuFeS2 |
| Fe | β Pyrrhotite | Fe1-xS |
| Cu | Copper | |
| Cu | β Chalcopyrite | CuFeS2 |
| Zn | Zinc | |
| Zn | β Sphalerite | ZnS |
Other Databases
| Link to USGS - Alaska: | SR311 |
|---|
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References
