| Quadrangle map, 1:250,000-scale | BC |
|---|---|
| Quadrangle map, 1:63,360-scale | B-3 |
| Latitude | 56.33 |
| Longitude | -130.78 |
| Nearby scientific data | Find additional scientific data near this location |
| Location and accuracy | The Boundary occurrence, known in 1981 (Elliott and Koch, 1981, p. 8, loc. 14) only from a U.S. Bureau of Mines claims map (U.S. Bureau of Mines, 1979), probably is a placer deposit on the Unuk River approximately 1.5 mile below the Alaska-British Columbia boundary. The location is probably accurate within about a quarter of a mile. |
Geologic descriptionThe country rocks in, and immediately upstream from, the area of this placer(?) occurrence are Tertiary or Cretaceous granodiorite and quartz diorite; Mesozoic or Paleozoic metasedimentary and metavolcanic rocks and minor marble; and Eocene leucocratic quartz monzonite and granodiorite (Elliott and Koch, 1981; Koch, 1996). No other geologic information about this property was publicly available in 1981 (Elliott and Koch, 1981, loc. 14). | |
| Geologic map unit | (-130.781708411901, 56.3296601031159) |
|---|---|
| Mineral deposit model | Placer? |
| Age of mineralization | Holocene? |
| Indication of production | None |
|---|---|
| Production notes | Unknown, but probably small, if any |
Additional commentsTen placer(?) claims staked in the valley of Unuk River (U.S. Bureau of Mines, 1979). Occurrence is in Misty Fiords National Monument. | |
| MRDS Number | A010207 |
|---|---|
| Reporters | H. C. Berg (Fullerton, California) |
| Last report date | 5/17/1998 |