From: Eruption style transition during the 2017–2018 eruptive activity at the Shinmoedake volcano, Kirishima, Japan: surface phenomena and eruptive products
Phenocryst type
2018 lava
2011 lavab
vol.%a
vol.%
Plagioclase
25.8
23.0
Orthopyroxene
3.9
3.4
Clinopyroxene
2.6
1.3
Fe-Ti oxides
0.1
1.0
Olivine
0.2
Phenocryst total
32.6
30.0
Groundmass
67.4
70.0