Hokkaido / Name of sample: HK-1
| No. | District | Name of Pyroclastic Deposite | Age |
|---|---|---|---|
| 009 | Kitami, Hokkaido | Kutcharo pumice flow (P3) | 30,000 |
Particle Size Distribution (wt%).
| -0.038mm | -0.075mm | -0.15mm | -0.3mm | -0.6mm | -1.18mm | -2.36mm | -4.75mm |
|---|---|---|---|---|---|---|---|
| 11.1 | 22.6 | 39.6 | 54.6 | 69.8 | 84.7 | 92.4 | 96.2 |
X-ray powder diffraction pattern
(F: feldspar, Q: quartz, H: hypersthen, M: magnetite)
Chemical Compositions and Content of Volcanic Glass (wt%).
| SiO2 | Al2O3 | Fe2O3 | TiO2 | CaO | MgO | Na2O | K2O | Ig.loss | Total | Content of Volcanic Glass |
|---|---|---|---|---|---|---|---|---|---|---|
| 66.48 | 15.44 | 4.11 | 0.69 | 3.75 | 1.31 | 4.26 | 1.30 | 2.31 | 99.65 | 58.43 |
DTG pattern of separated volcanic glass
Chemical Compositions of Separated Vocanic Glass (wt%).
| SiO2 | Al2O3 | Fe2O3 | TiO2 | CaO | MgO | Na2O | K2O | Ig.loss | Total |
|---|---|---|---|---|---|---|---|---|---|
| 73.88 | 12.45 | 2.11 | 0.38 | 1.60 | 0.50 | 3.99 | 1.73 | 3.15 | 99.79 |