| Main commodities | Ag; Cu; Pb; Zn |
|---|---|
| Other commodities | As; Sb |
| Ore minerals | arsenopyrite; chalcopyrite; galena; pyrite; sphalerite |
| Gangue minerals | quartz |
| Quadrangle map, 1:250,000-scale | CG |
|---|---|
| Quadrangle map, 1:63,360-scale | A-2 |
| Latitude | 56.004 |
| Longitude | -158.644 |
| Nearby scientific data | Find additional scientific data near this location |
| Location and accuracy | This occurrence is located in T. 48 S., R. 60 W., of the Seward Meridian, approximately 1.3 miles south of the mouth of Fishook Bay. The location is accurate to within 1/2 mile. |
Geologic descriptionThe rocks at this site consist of Cretaceous Hoodoo Formation cut by andesite dikes. The U.S. Geological Survey sampled a pyritic quartz vein which cuts hornfelsed siltstone of the Hoodoo Formation at this site (Angeloni and others, 1985). The width of the vein is unknown. The sample of vein material ran 200 ppm antimony, greater than 10,000 ppm arsenic, 1,500 ppm copper, 1,500 ppm lead, 150 ppm silver; and greater than 10,000 ppm zinc. | |
| Geologic map unit | (-158.646015392254, 56.003215872544) |
|---|---|
| Mineral deposit model | Polymetallic vein (Cox and Singer, 1986; model 22c). |
| Mineral deposit model number | 22c |
| Age of mineralization | Tertiary? |
| Workings or exploration | Rock sample (83AWs 57) of vein material collected by the U.S. Geological Survey contained 200 ppm antimony, greater than 10,000 ppm arsenic, 1,500 ppm copper, 1,500 ppm lead, 150 ppm silver, and greater than 10,000 ppm zinc. |
|---|---|
| Indication of production | None |
Additional commentsThis site is located within the Alaska Peninsula National Wildlife Refuge. | |
| MRDS Number | 10307311 |
|---|---|
| Reporters | S.H. Pilcher (Anchorage) |
| Last report date | 2/8/2000 |