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Table 2 Analysis of the geothermal water from 24 June 2016

From: Rippled scales in a geothermal facility in the Bavarian Molasse Basin: a key to understand the calcite scaling process

Field parameters

pH (water at surface)

6.31

  

Electric conductivity, \(\mu \hbox {S/cm} \, T_{ref} = 25^{\,\circ } \hbox {C}\)

639

  

Redox potential, mV

-247

  

One liter of water contains:

 

Mass

Equivalents

 

mg

mmol

%

Cations

Sodium (\({\hbox {Na}}^{+}\))

129

5.62

76.5

Potassium (\({\hbox {K}}^{+}\))

20.5

0.524

7.13

Ammonium (\({\hbox {NH}}_{4}^{+}\))

3.10

0.172

2.34

Calcium (\({\hbox {Ca}}^{2+}\))

16.7

0.833

11.3

Magnesium (\({\hbox {Mg}}^{2+}\))

2.25

0.185

2.52

Strontium (\({\hbox {Sr}}^{2+}\))

0.54

0.012

0.17

Barium (\({\hbox {Ba}}^{2+}\))

0.17

0.003

0.03

Manganese (\({\hbox {Mn}}^{2+}\))

0.00

0.000

0.00

Iron(II)+(III) as Iron(II) (\({\hbox {Fe}}^{3+,2+}\))

0.01

0.001

0.01

 Sum of cations

172

7.35

100.0

Anions

Fluoride (\({\hbox {F}}^{-}\))

2.81

0.148

2.03

Chloride (\({\hbox {Cl}}^{-}\))

88.2

2.49

34.1

Bromide (\({\hbox {Br}}^{-}\))

0.45

0.006

0.08

Sulfate (\({\hbox {SO}}_{4}^{2-}\))

12.4

0.258

3.54

Hydrogen sulfide (\({\hbox {HS}}^{-}\))

1.91

0.058

0.79

Hydrogencarbonate (\({\hbox {HCO}}_{3}^{-}\))

265

4.33

59.4

 Sum of anions

371

7.29

100.0

Undissociated matter

Silicic acid (\({\hbox {H}}_{2} {\hbox {SiO}}_{3}\))

105

1.34

 

Boric acid (\({\hbox {H}}_3 {\hbox {BO}}_{3}\))

9.20

0.149

 

Total dissolved solids (TDS)

656