Rock type composition (wt%) | Grey syenite | Pinky syenites | Whitish syenites | Contact granite | Gabbro | Peridotgabbro | ||||
Dark-grey MDF1 | Light-grey MDFp1 | MDF13 | MDF6 | MDF20 | MDF23 | MDF8 | MDF4 | MDF22 | MDF12 | |
SiO2 | 62.67 | 61.30 | 60.08 | 60.42 | 62.23 | 63.09 | 74.00 | 49.82 | 49.95 | 42.08 |
TiO2 | 0.89 | 0.82 | 1.02 | 1.02 | 0.90 | 0.87 | 0.04 | 1.68 | 1.71 | 1.71 |
Al2O3 | 17.59 | 18.43 | 18.13 | 18.22 | 17.79 | 17.48 | 13.72 | 13.60 | 14.09 | 15.83 |
Fe2O3t | 3.71 | 3.34 | 4.16 | 4.16 | 3.43 | 3.48 | 0.80 | 13.41 | 12.93 | 16.89 |
MnO | 0.09 | 0.08 | 0.10 | 0.10 | 0.07 | 0.08 | 0.03 | 0.16 | 0.16 | 0.27 |
MgO | 0.73 | 0.71 | 0.97 | 0.97 | 0.79 | 0.76 | 0.08 | 9.10 | 8.63 | 9.29 |
CaO | 1.71 | 2.43 | 2.75 | 2.83 | 1.82 | 2.20 | 0.46 | 9.05 | 9.04 | 10.79 |
Na2O | 5.33 | 5.25 | 5.17 | 5.18 | 5.02 | 4.90 | 2.90 | 2.73 | 2.82 | 2.15 |
K2O | 6.34 | 6.26 | 5.95 | 5.87 | 6.98 | 6.23 | 6.82 | 0.35 | 0.37 | 0.39 |
P2O5 | 0.25 | 0.25 | 0.30 | 0.30 | 0.24 | 0.27 | 0.01 | 0.17 | 0.18 | 0.03 |
LOI | 0.22 | 0.25 | 0.52 | 0.40 | 0.27 | 0.16 | 0.49 | 0.00 | 0.00 | 0.00 |
Total | 99.53 | 99.12 | 99.13 | 99.46 | 99.54 | 99.55 | 99.34 | 100.06 | 99.87 | 99.43 |
Na2O + K2O | 11.67 | 11.51 | 11.12 | 11.05 | 11.10 | 11.13 | 9.72 | 3.08 | 3.19 | 2.54 |
Al2O3/TiO2 | 19.76 | 22.48 | 17.77 | 17.86 | 19.77 | 20.09 | 343 | 8.10 | 8.24 | 9.26 |
Na2O/K2O | 0.84 | 0.84 | 0.87 | 0.88 | 0.72 | 0.79 | 0.43 | 7.8 | 7.6 | 5.5 |
(Na2O + K2O) − (0.37*SiO2 − 14.43) | 2.91 | 3.28 | 3.32 | 3.12 | 3.40 | 2.22 | -3.23 | -0.92 | -0.86 | 1.40 |
Na2O + K2O/Al2O3 | 0.66 | 0.62 | 0.61 | 0.61 | 0.67 | 0.64 | 0.71 | 0.23 | 0.23 | 0.16 |
CaO + Na2O + K2O | 13.38 | 13.94 | 13.87 | 13.88 | 13.82 | 13.33 | 10.18 | 12.13 | 12.23 | 13.33 |
Mg# | 24.89 | 26.36 | 26.20 | 26.20 | 27.94 | 22.94 | 12.06 | 53.33 | 52.92 | 48.26 |
CIPW Norms (wt%) | ||||||||||
Quartz | 1.97 | - | - | - | 0.84 | 4.50 | 29.84 | - | - | - |
Orthose | 37.70 | 37.40 | 35.00 | 35.00 | 41.53 | 37.03 | 40.76 | 2.06 | 2.19 | 2.31 |
Albite | 45.38 | 44.91 | 44.22 | 44.22 | 42.76 | 41.70 | 24.82 | 23.04 | 23.85 | 7.54 |
Anorthite | 5.38 | 8.32 | 9.21 | 9.21 | 5.43 | 7.34 | 2.24 | 23.76 | 24.68 | 32.50 |
Nepheline | - | - | - | - | - | - | - | - | - | 5.80 |
Diopside | 1.28 | 1.88 | 2.52 | 2.52 | 1.75 | 1.57 | - | 16.35 | 15.57 | 17.39 |
Hypersthene | 4.99 | 4.59 | 4.47 | 4.47 | 4.47 | 4.62 | 1.20 | 18.69 | 18.73 | - |
Olivine | - | 0.09 | 1.13 | 1.13 | - | - | - | 9.96 | 8.84 | 27.88 |
Magnetite | 1.01 | 0.65 | 0.80 | 0.80 | 0.94 | 0.95 | 0.28 | 2.56 | 2.48 | 3.25 |
Ilmenite | 1.70 | 1.57 | 1.95 | 1.95 | 1.72 | 1.66 | 0.08 | 3,18 | 3,25 | 3.26 |
Corindon | - | - | - | - | - | - | 0.76 | - | - | - |
Apatite | 0.58 | 0.59 | 0.70 | 0.70 | 0.56 | 0.63 | 0.02 | 0.39 | 0.42 | 0.07 |
TOTAL | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 |