Table 1 Statistical parameters of components used for automatic 3D geological mapping, wt. %.

From: Approach of automatic 3D geological mapping: the case of the Kovdor phoscorite-carbonatite complex, NW Russia

Rock (number of samples)

SiO2

Femagnetic

P2O5

CO2

Mean

Median

SD

Cf. var.

Min

Max

Mean

Median

SD

Cf. var.

Min

Max

Mean

Median

SD

Cf. var.

Min

Max

Mean

Median

SD

Cf. var.

Min

Max

Phoscorites

F (8)

31.1

31.6

4.2

14

24.5

36.0

8.4

8.4

3.2

38

3.5

14.1

3.0

3.3

0.9

31

1.2

4.0

4.3

3.3

2.9

68

1.4

9.0

AF (30)

25.4

24.8

4.1

16

17.6

34.4

9.9

10.6

3.1

31

4.4

14.8

7.0

6.8

1.7

24

4.1

11.3

3.5

3.1

1.8

52

0.8

8.7

M (4)

6.1

6.2

0.7

11

5.2

6.6

38.9

39.9

8.5

22

29.1

46.5

3.5

3.6

0.5

16

2.7

4.0

6.9

5.7

5.6

82

2.3

13.9

MF (13)

14.7

14.1

6.7

46

7.3

27.1

29.3

29.0

7.9

27

16.0

41.1

1.8

1.8

1.0

56

0.2

3.4

5.5

4.6

3.6

66

1.3

13.0

MAF (69)

13.7

13.0

5.6

41

7.0

26.2

24.7

26.0

7.1

29

12.4

39.2

8.8

8.8

2.9

33

4.0

15.8

2.8

2.4

1.5

53

0.7

7.8

MA (19)

7.0

6.1

4.2

60

3.4

22.1

31.2

32.8

5.6

18

16.0

42.0

9.4

10.1

2.3

25

5.4

13.9

4.5

4.6

2.3

52

1.2

9.3

CMAF (9)

8.4

8.5

1.0

12

7.2

10.0

23.8

22.0

5.9

25

14.8

34.2

6.8

7.2

2.0

29

2.2

9.1

11.2

12.0

2.6

23

7.3

14.9

CMF (3)

7.7

7.8

0.5

7

7.0

8.1

30.4

26.8

9.0

30

23.7

40.6

1.1

1.2

0.6

53

0.4

1.5

13.4

14.1

3.6

27

9.5

16.7

CAF (3)

11.3

10.3

1.8

16

10.2

13.4

12.6

12.3

0.9

7

11.8

13.5

8.3

8.7

1.1

13

7.1

9.1

13.9

14.1

0.7

5

13.2

14.4

CM (9)

5.6

5.9

0.7

13

4.4

6.3

24.2

25.9

3.7

15

18.4

28.6

2.3

2.6

1.0

42

1.2

3.8

18.1

17.5

1.8

10

16.1

20.9

CA (9)

3.5

3.7

0.8

22

2.3

4.5

10.7

11.2

2.0

19

7.1

13.7

8.0

8.1

2.0

25

4.4

10.5

23.9

22.1

4.5

19

18.2

31.7

CMA (22)

5.0

5.1

0.9

19

3.2

6.7

23.7

24.1

4.6

19

15.1

32.1

7.1

7.6

2.0

28

1.7

10.2

14.0

13.7

3.8

27

8.2

24.1

Carbonatite (42)

2.7

2.2

1.8

66

1.0

11.3

8.3

7.8

5.3

64

1.2

19.2

5.0

4.4

1.8

37

1.2

9.7

28.9

29.3

5.4

19

19.3

38.4

Host rocks (38)

38.3

38.7

4.1

11

30.1

50.1

3.3

2.5

1.7

53

1.3

8.1

1.2

1.1

0.4

37

0.3

1.9

5.2

5.0

1.7

33

1.9

8.9

  1. SD is standard deviation. Cf. var. is coefficient of variation.
  2. Letters C, M, A, F are mineral indexes in phoscorite name: calcite, magnetite, apatite and forsterite, correspondingly (classification is shown in Fig. 2).