Honshu / Name of sample: MV-1
| No. | District | Name of Pyroclastic Deposite | Age |
|---|---|---|---|
| 026 | Nakatsugawa, Gifu Pref. | Nakatsugawa vitric tuff | ? |
Particle Size Distribution (wt%).
| -0.038mm | -0.075mm | -0.15mm | -0.3mm | -0.6mm | -1.18mm | -2.36mm | -4.75mm |
|---|---|---|---|---|---|---|---|
| 11.3 | 40.2 | 63.1 | 80.8 | 93.8 | 99.1 | 100.0 | 100.0 |
 Microphotograph of glass particles. (size:0.15-0.3mm)  X-ray powder diffraction pattern. (Q: quartz) |
Chemical Compositions and Content of Volcanic Glass (wt%).
| SiO2 | Al2O3 | Fe2O3 | TiO2 | CaO | MgO | Na2O | K2O | Ig.loss | Total | Content of Volcanic Glass |
|---|---|---|---|---|---|---|---|---|---|---|
| 74.51 | 12.72 | 1.25 | 0.15 | 0.94 | 0.45 | 4.15 | 2.70 | 2.94 | 99.81 | 95.98 |
 XRD pattern of separated volcanic glass.  DTG pattern of separated volcanic glass. |
Chemical Compositions of Separated Vocanic Glass (wt%).
| SiO2 | Al2O3 | Fe2O3 | TiO2 | CaO | MgO | Na2O | K2O | Ig.loss | Total |
|---|---|---|---|---|---|---|---|---|---|
| 74.41 | 12.53 | 0.93 | 0.09 | 0.51 | 0.36 | 4.04 | 3.49 | 3.63 | 99.99 |