classification of LAPs
| Gls | glassy particles | Gls particles comprises unaltered magmatic particles with matrix glass and microlites, and sometimes containing micro-phenocrysts |
| Xtn | holocrystalline particles | Xtn particles comprises unaltered holocrystalline magmatic particles containing a micrographic matrix of orthoclase and quartz |
| Fx | free crystals | Fx particles are crystalline particles without glassy nor holocrystalline matrix |
| Alt | altered particles | Alt particles are once classified as less altered particles under binocular microscope but judged as altered particles by SEM observation |
| Unc | unclassified particles | Unc particles are unclassified because of multiple features, e.g., partly altered |