| Quadrangle map, 1:250,000-scale | AD |
|---|---|
| Quadrangle map, 1:63,360-scale | C-2 |
| Latitude | 51.9308 |
| Longitude | -176.6239 |
| Nearby scientific data | Find additional scientific data near this location |
| Location and accuracy | On shore of Andrew Lake, approximately 2 km northeast of its southernmost point. Possibly additional mineralization extents along a N 20 E extending linear to the east. |
Geologic descriptionFine-grained lithic sandstone of the Andrew Lake Formation overlies volcanic breccia and massive flows (?). A linear, possibly a fault, extends northeast (about N 20 E) from the locality. Other samples of volcanic rocks collected in the vicinity of this linear were also weakly anomalous in Zn and Au. | |
| Geologic map unit | (-176.626383081398, 51.9294208446332) |
|---|---|
| Age of mineralization | Tertiary? |
| Alteration of deposit | Chloritization. |
| Workings or exploration | A single sample of the sandstone collected during brief U.S. Geological Survey reconnaissance studies in 1993 yielded 120 ppm Cu, 110 ppm Zn, and 4 ppb Au. Volcanic rock samples yielded 4 ppb Au (93TL 102c) and up to 120 ppm Zn (samples 93AWs 12 and 13). |
|---|---|
| Indication of production | None |
| MRDS Number | A106035 |
|---|---|
| Reporters | F.H. Wilson, T.D. Light |
| Last report date | 2/22/1996 |