Compaction of Hyaloclastite from the Active Geothermal System at Krafla Volcano, Iceland

Table 2

SEM-EDS quantitative results, phase abundance of the solid fraction.

Phase	Surface	70 m	76 m	556 m	732 m
Glass (%)	56.0	69.5	54.1	47.5	56.3
Smectite Fe Mg (%)	26.7	28.2	37.3	27.6	17.9
Zeolite (%)	6.9	0.1	0.2	16.4	13.5
Anorthite (%)	6.7	0.2	1.3	1.0	1.1
Augite (%)	1.8	0.1	0.6	0.7	2.3
Quartz (%)	0.1	0.0	0.0	0.0	0.2
Actinolite (%)	0.4	0.0	0.1	2.3	3.2
Calcite (%)	0.0	0.9	5.0	0.6	2.4
Apatite (%)	0.0	0.3	0.3	1.4	0.6
Pyrite (%)	0.0	0.0	0.3	0.2	0.2
Others (%)	1.4	0.6	0.9	2.5	2.4
Total (%)	100	100	100	100	100