Supercritical Fluid Geochemistry in Geothermal Systems

Table 2

Basaltic glass composition (BAS)^a.

Element
SiO2	wt.%	48.12
Al2O3	wt.%	14.62
FeO	wt.%	9.82
Fe2O3	wt.%	1.11
MgO	wt.%	9.08
CaO	wt.%	11.82
Na2O	wt.%	1.97
K2O	wt.%	0.29
Cl^b	ppm	220
CO2^b	ppm	100
B^b	ppm	1.0

^aBasaltic glass from Stapafell [62]. ^bTaken as for average basalts in Iceland, after Kaasalainen and Stefánsson [64].