Abstract
Obsidians characterized by low content in iron oxides (less than 2. 2% in weight) were studied by Moessbauer spectroscopy showing that they contain free Fe**2** plus and Fe**3** plus ions in various amounts and also small Fe//3O//4 amorphous particles whose average size is likely to be larger in the Teotihuacan obsidian.
| Original language | English |
|---|---|
| Pages (from-to) | 275-276 |
| Number of pages | 2 |
| Journal | Journal de physique. Colloque |
| Volume | 41 Colloq C-1 |
| Issue number | 1 |
| State | Published - 1979 |
| Event | Int Conf on Moessbauer Spectrosc, Portoroz - Duration: 10 Sep 1979 → 14 Sep 1979 |