Table 1 Content of rare earth elements (REEs; reported as μg/g; mean ± standard deviation) in the basalt substrate used in this experiment and concentrations (total nanograms leached into the chamber fluid volume of 6 mL) at the end of the BioRock experiment in S. desiccabilis bioleaching chambers and non-biological controls on-board the International Space Station.

3.60 ± 1.26

4.96 ± 0.51

3.74 ± 0.51

3.22 ± 2.20

2.56 ± 0.89

1.66 ± 0.23

8.85 ± 2.89

9.26 ± 1.94

7.18 ± 0.99

6.45 ± 3.99

5.79 ± 2.06

4.39 ± 1.26

1.12 ± 0.43

1.67 ± 0.48

1.07 ± 0.11

0.96 ± 0.64

0.85 ± 0.28

0.48 ± 0.04

5.35 ± 2.02

7.89 ± 1.99

5.20 ± 0.47

4.68 ± 3.49

4.28 ± 1.46

2.28 ± 0.24

1.44 ± 0.57

2.03 ± 0.36

1.42 ± 0.12

1.13 ± 0.90

1.06 ± 0.37

0.54 ± 0.07

0.51 ± 0.16

0.66 ± 0.07

0.53 ± 0.04

0.44 ± 0.25

0.42 ± 0.11

0.27 ± 0.03

2.03 ± 0.86

2.93 ± 0.51

2.18 ± 0.13

1.60 ± 1.37

1.36 ± 0.52

0.70 ± 0.10

0.42 ± 0.14

0.57 ± 0.08

0.44 ± 0.01

0.30 ± 0.21

0.26 ± 0.07

0.16 ± 0.02

2.82 ± 1.00

3.99 ± 0.55

3.08 ± 0.21

1.86 ± 1.43

1.58 ± 0.52

0.92 ± 0.11

0.69 ± 0.27

0.98 ± 0.08

0.78 ± 0.08

0.45 ± 0.37

0.36 ± 0.13

0.20 ± 0.03

2.34 ± 1.01

3.37 ± 0.22

2.75 ± 0.32

1.49 ± 1.26

1.17 ± 0.47

0.64 ± 0.11

0.42 ± 0.16

0.58 ± 0.04

0.49 ± 0.06

0.29 ± 0.19

0.24 ± 0.07

0.16 ± 0.01

2.44 ± 1.09

3.52 ± 0.36

2.83 ± 0.35

1.47 ± 1.19

1.16 ± 0.44

0.67 ± 0.11

0.49 ± 0.20

0.68 ± 0.08

0.57 ± 0.07

0.33 ± 0.22

0.27 ± 0.08

0.18 ± 0.02