| Quadrangle map, 1:250,000-scale | SI |
|---|---|
| Quadrangle map, 1:63,360-scale | D-2 |
| Latitude | 57.9466 |
| Longitude | -134.5479 |
| Nearby scientific data | Find additional scientific data near this location |
| Location and accuracy | This prospect is at an elevation of about 850 feet on or near a logging road about 0.3 mile east of the southwest corner of sec. 27, T. 45 S., R. 67 E. The prospect is MAS no. 0021140186 (U.S. Bureau of Land Management, 2002). The location is accurate within about 0.5 mile. |
Geologic descriptionThe geology in the vicinity of this prospect is not well known. Lathram and others (1965) mapped the rocks as part of the Devonian Retreat Group which consists of schist with marble interbeds. However, more recent work at the Greens Creek Mine (Barnett and Miller, 2003; ARDF JU253) about 10 miles to the north indicates that at least some of the rocks that they mapped as Retreat Group are part of the Triassic Hyd Group that consists of felsic and intermediate volcanic rocks, limestone, slate, chert, and conglomerate. Similarly, it is likely that the rocks at the Pyrola prospect (SI065) about a mile to the north are part of the Triassic Hyd Group. The only information available about this prospect is that one or more claims were staked for copper and silver. | |
| Geologic map unit | (-134.549672151205, 57.9462645659835) |
|---|---|
| Age of mineralization | Triassic? (see geologic description). |
| Workings or exploration | The only information available about this prospect is that one or more claims were staked for copper and silver. |
|---|---|
| Indication of production | None |
Additional commentsThis prospect is within the Wilderness of the Admiralty Island National Monument. | |
ReferencesU.S. Bureau of Land Management, 2002, Alaska mineral locations database report (Sitka quadrangle), July 2, 2002, 205 p. [http://imcg.wr.usgs.gov/dem.html]
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| Reporters | Donald Grybeck (U.S. Geological Survey) |
|---|---|
| Last report date | 5/5/2005 |