Table 5 Quantitative chemical analysis from EDS sum-spectra per bulk grain population for populations with > 0.5 area % contribution, reported as oxide (or element) wt% and normalised to 100% of the elements above detection limit (values > 3-sigma error in quantification result)

4.88

1.0

4.3

2.4

0.5

0.1

2.4

1.1

4.3

-

7.20

0.9

4.0

6.7

0.6

0.1

2.2

0.9

3.0

-

14.23

0.5

1.6

2.0

0.2

-

1.9

0.9

3.3

0.1

17.20

0.7

1.6

6.3

0.3

0.1

1.8

0.8

3.3

0.1

3.65

0.4

1.1

1.9

0.2

-

1.7

0.8

7.5

0.1

1.90

0.7

1.3

6.0

0.3

-

1.6

0.7

6.2

0.1

0.58

0.1

0.5

1.0

0.1

-

0.9

0.5

13.5

-

1.12

0.4

0.4

2.5

0.4

0.2

3.3

1.2

2.4

-

0.71

0.8

1.0

4.0

0.4

0.1

1.5

0.4

2.3

-

2.26

0.5

1.7

2.4

0.3

0.1

1.9

1.0

5.6

-

13.87

0.6

0.4

2.7

0.2

0.1

0.6

0.2

2.6

0.2

10.86

0.5

0.3

1.5

0.1

0.1

0.4

0.1

0.7

-

0.89

0.7

0.2

0.6

-

0.4

0.2

0.1

0.3

-

2.46

0.6

0.1

1.0

-

0.1

0.3

0.1

0.6

-

2.39

0.3

0.1

0.6

-

-

0.1

0.1

0.4

-

4.60

0.3

0.6

2.7

0.2

-

1.1

-

2.3

-

1.58

0.4

0.5

5.3

0.3

-

0.6

0.6

3.5

-

0.50

-

-

0.4

-

0.2

0.3

0.2

0.7

-

1.21

1.2

0.6

1.1

0.1

0.9

1.1

0.0

0.4

-

1.33

0.4

0.5

3.2

0.3

0.1

1.3

0.4

3.2

-

0.56

0.4

0.4

5.1

0.4

0.2

0.6

0.4

2.4

-

0.51

0.5

0.5

3.0

0.2

-

0.7

0.1

0.4

-

0.56

0.5

0.8

2.8

0.2

0.7

1.0

-

0.5

-

1.33

1.6

2.3

3.5

0.1

0.7

1.1

0.2

6.4

0.9