Sluice gate (spot) nails chemistry

Element (%)

No.

Sample

Material

Si

Ca

Fe

Mg

Cl

C

O

1

A-01

Wood, fibers

1.38

1.91

52.87

0.87

-

15.37

27.61

2

A-03

Metallic iron

-

-

97.36

-

-

2.64

-

3

B-01

Wood, cell wall

0.78

5.85

70.64

0.33

0.68

10.90

10.83

4

C-01

Wood, fibers

0.49

1.00

62.36

0.69

-

9.90

25.56

5

D-01

Magnetite?

0.64

0.80

68.88

-

-

13.14

15.87

6

D-02

Wood, fibers

0.57

1.56

54.67

1.14

-

15.68

26.39

7

H2-006

Fe hydroxide

1.06

0.86

76.08

1.54

4.24

16.23

8

H2-015

Magnetite crystallites

-

-

85.01

-

-

-

14.99

9

H2-027

Akaganeite crystalites

-

-

77.44

-

4.46

-

18.10

10

H2-028

Akaganeite, rosette -like and fibrous crystallites

-

-

72.28

-

5.44

-

22.28