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).