Indonesia / Name of sample: AO-1
| No. | District | Name of Pyroclastic Deposite | Age |
|---|---|---|---|
| 059 | Wadatohge, Nagano Pref. | Obsidian | ? |
Particle Size Distribution (wt%).
| -0.038mm | -0.075mm | -0.15mm | -0.3mm | -0.6mm | -1.18mm | -2.36mm | -4.75mm |
|---|---|---|---|---|---|---|---|
| - | - | - | - | - | - | - | - |
Chemical Compositions and Content of Volcanic Glass (wt%).
| SiO2 | Al2O3 | Fe2O3 | TiO2 | CaO | MgO | Na2O | K2O | Ig.loss | Total | Content of Volcanic Glass |
|---|---|---|---|---|---|---|---|---|---|---|
| 76.67 | 13.42 | 0.79 | 0.07 | 0.57 | 0.13 | 3.31 | 3.94 | 0.84 | 99.74 | - |
DTG (Differencial thermal gravity) pattern.