| Main commodities | Au |
|---|---|
| Ore minerals | chalcopyrite; galena; pyrite; sphalerite |
| Gangue minerals | quartz |
| Quadrangle map, 1:250,000-scale | PM |
|---|---|
| Quadrangle map, 1:63,360-scale | A-2 |
| Latitude | 55.189 |
| Longitude | -160.557 |
| Nearby scientific data | Find additional scientific data near this location |
| Location and accuracy | This prospect is located on southeastern Unga Island and represents an old claim block on the creek draining the Apollo mine site. It is approximately 1,600 feet northwest of the head of Delarof Bay and 1,500 feet east of the Apollo mine adit portal (Wilson and others, 1988, locality 41). The location is accurate to within 1,200 feet. |
Geologic descriptionThis prospect is a vuggy, oxidized quartz vein that strikes N 38 E and has a strike length of approximately 500 feet (Wilson and others, 1988). It occurs in volcanic rocks of the late Eocene to early Oligocene Popof volcanic rocks (Wilson and others, 1995). The vein is exposed in a short adit and may be the southwestern continuation of the Sitka fracture system (Wilson and others, 1988). Sulfides present in the vein include chalcopyrite, galena, pyrite, and sphalerite. | |
| Geologic map unit | (-160.559036539517, 55.1881703821225) |
|---|---|
| Mineral deposit model | Epithermal gold vein, Polymetallic vein (Cox and Singer, 1986; model 22c) |
| Mineral deposit model number | 22c |
| Age of mineralization | Eocene or younger. |
| Workings or exploration | This prospect has been explored by a short adit. |
|---|---|
| Indication of production | None |
| MRDS Number | 10308147 |
|---|---|
ReferencesWebber, B.S., Moss, J.M., Rutledge, F.A., and Sanford, R.S., 1946, Reconnaissance examinations of parts of the Alaska Peninsula and Aleutian Islands southwestern Alaska: U.S. Bureau of Mines, unpublished report of investigations, 40 p. (Report held by the U.S. Geological Survey, Anchorage.)
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| Reporters | S.H. Pilcher |
| Last report date | 1/15/2001 |