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Table 1 Major and minor elemental composition and loss-on-ignition of selected scale-fragments based on X-ray fluorescence (XRF) of fused glass pellets (b.d.l. = below detection limit)

From: Scale-fragment formation impairing geothermal energy production: interacting H2S corrosion and CaCO3 crystal growth

Sample_ID KIR1 KIR-GOK KIR-WT DUR1 DUR81 DUR-WT
Component [wt%]
 L.O.I. 45.88 43.43 43.97 43.26 43.12 43.74
 MgO 2.23 2.63 2.51 2.25 2.82 2.59
 Al2O3 0.47 b.d.l. b.d.l. 0.20 0.15 b.d.l.
 SiO2 0.56 0.08 0.04 0.13 0.11 0.06
 P2O5 0.01 b.d.l. 0.03 0.01 0.01 b.d.l.
 SO3 1.84 0.65 0.35 2.40 1.07 1.03
 CaO 46.21 52.03 52.5 49.27 51.16 51.41
 MnO b.d.l. b.d.l. b.d.l. 0.03 b.d.l. b.d.l.
 Fe2O3 2.27 1.08 0.48 2.02 1.44 0.92
 Ni 0.02 b.d.l. b.d.l. b.d.l. b.d.l. b.d.l.
 Cu 0.18 b.d.l. 0.02 0.30 0.02 0.12
 Zn 0.25 b.d.l. b.d.l. 0.04 b.d.l. 0.02
 Sr 0.07 0.09 0.09 0.08 0.09 0.09