A Review of the Hydrochemistry of a Deep Sedimentary Aquifer and Its Consequences for Geothermal Operation: Klaipeda, Lithuania

Table 1

Reported range of compositions of groundwater brines in the Precambrian basement in the centre of the Baltic Synclinorium in Western Lithuania [3].

Cations	Concentration (g L^-1)	Anions	Concentration (g L^-1)
Na^+	30-40	Cl^-	100-200
Ca^2+	20-30	HCO3^-	10-30
Mg^2+	3-4	SO4^=	0.03-0.4
K^+	0.7-0.9	Br^-	0.7-1.2
Sr^2+	0.3-0.4	I^-	0.002-0.004
NH4^+	0.02-0.1
Fe^2+	0.1-0.5
Li^+	0.009-0.010