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Table 2 Summary of the magnetic measurements

From: Hydrogen-rich hydrothermal environments in the Hadean ocean inferred from serpentinization of komatiites at 300 °C and 500 bar

  

Room temperature

10 K

 

Experiment

Sample state

m (mg)

M s (μAm2)

M s (Am2/kg)

m (mg)

M s (μAm2)

M s (Am2/kg)

T C (K)

Olivine

Starting material

9.22

0

0

 

Alteration product

4.14

15.3

3.69

811

Al2O3-5 % komatiite

Starting material

11.98

0.62

0.05

33.6

32.1

0.95

~30

 

Alteration product

6.58

0.01

0

18.6

50.2

2.70

~30

Al2O3-10 % komatiite

Starting material

5.96

0.01

0

41.1

33.0

0.80

~30

 

Alteration product

2.70

0.04

0.01

13.1

22.5

1.72

~30