| Sample identification | ||
|---|---|---|
| Record ID | 1639 | |
| Sample ID | 78ANf3 | |
| Geographic location | ||
| Quadrangle | Medfra | |
| Latitude | 63.223331 | |
| Longitude | -154.758331 | |
| Processing information | ||
| Dating method | K-Ar | |
| Comment | Sericitic altered quartz porphyry, dike, Nixon Fork Mine | |
| Reference | Moll et al, 1981 | |
| Sample characteristics | ||
| Rock type | porphyry | |
| Mineral dated | muscovite | |
| Analytic result | ||
| Age (my) | 69.1 | |