| Quadrangle map, 1:250,000-scale | BN |
|---|---|
| Quadrangle map, 1:63,360-scale | B-1 |
| Latitude | 65.28 |
| Longitude | -162.28 |
| Nearby scientific data | Find additional scientific data near this location |
| Location and accuracy | This occurrence is very approximately located (probably within 2 miles) in the headwaters of Timber Creek, a south tributary to Koyuk River. The confluence of Timber Creek and its west tributary Nutmoyuk Creek (as shown on the Bendeleben B-1 quadrangle) is about 3 miles downstream of this location (the 1:250,000 Bendeleben quadrangle shows Timber Creek to be a tributary of Nutmoyuk Creek). This is locality 18 of Cobb (1972; MF 417; 1975; OFR 75-429). |
Geologic descriptionCopper-stained greenstone near a contact with limestone was apparently discovered and initially explored in 1906-1907 (Smith and Eakin, 1911). Shallow prospect pits were dug and some high-grade samples were taken that supposedly contained 17 to 70 ounces/ton Ag and about 0.05 ounces/ton Au. The location of this occurrence is uncertain but mafic metavolcanic rocks and Devonian marble are mapped in the headwaters of Timber Creek (Till and others, 1986). | |
| Geologic map unit | (-162.282636783, 65.2793037243652) |
|---|---|
| Mineral deposit model | Copper-bearing greenstone |
| Age of mineralization | If epigenetic, probably Cretaceous or younger. |
| Alteration of deposit | Oxidation is well-developed. |
| Workings or exploration | Shallow prospect pits were apparently dug when the occurrence was first discovered. |
|---|---|
| Indication of production | None |
| MRDS Number | A012733 |
|---|---|
References | |
| Reporters | Travis L. Hudson (Applied Geology) |
| Last report date | 3/15/1999 |