A multicomponent geothermometer for high-temperature basalt settings

Geothermal Energy

Science – Society – Technology

Table 4 Chemical analysis of water samples by Guðmundsson and Arnórsson (2002) from wells at Krafla collected in 1997 and 1998

Sample no.	Well	Sampling date	Pressure [bar]	pH value	Temperature of pH measurement [°C]	Element concentration of the sample [mmol/kg]
Sample no.	Well	Sampling date	Pressure [bar]	pH value	Temperature of pH measurement [°C]	SiO₂	Na	K	Ca	Mg	Cl	F	SO₄	H₂S	Fe	Al	CO₂
97-3103	K-28	26.10.1997	6.5	9.75	20.9	7.98	9.66	0.66	0.10	0.0001	0.49	0.048	2.99	1.08	0.00015	0.039	0.70
98-3206	K-11	24.06.1998	1.9	9.65	23.2	10.81	9.70	0.80	0.05	0.0001	1.19	0.105	2.34	1.03	0.00009	0.038	2.15
98-3208	K-24	25.06.1998	2.3	9.73	24.2	6.04	9.48	0.44	0.09	0.0000	0.86	0.040	3.29	0.85	0.00006	0.031	0.41
98-3210	K-28	25.06.1998	5.2	9.55	24.8	7.89	9.86	0.65	0.09	0.0001	0.72	0.042	3.58	1.29	0.00013	0.033	1.23