| Weathered pegmatites in Gatumba | Fresh pegmatite in Gitarama | Biotite-muscovite granite in Gitarama | Amphibolite in Gitarama | ||||||||||
Sample | Gape01 | Gape02 | Gape03 | Gape04 | Gape05 | Gape06 | Gipe07 | Gipe08 | Gipe09 | RG01 | RG02 | RG03 | RGA01 | RGA02 |
A/CNK | 7.65 | 0.51 | 0.64 | 1.19 | 1.24 | 0.50 | 1.05 | 1.04 | 1.05 | 1.02 | 1.03 | 1.03 | 0.56 | 0.54 |
A/NK | 9.47 | 1.11 | 2.43 | 1.26 | 1.28 | 1.11 | 1.10 | 1.09 | 1.09 | 1.42 | 1.43 | 1.43 | 4.97 | 5.04 |
K/Rb | 15.74 | 22.40 | 16.09 | 80.26 | 24.59 | 22.23 | 192.00 | 190.41 | 199.39 | 193.12 | 191.60 | 181.74 | 166.02 | 176.23 |
K/Cs | 666.89 | 2411.38 | 550.92 | 5609.10 | 3444.94 | 2204.24 | 11,137.57 | 11,418.23 | 11,700.99 | 6426.49 | 6240.72 | 5843.80 | 1865.50 | 1959.35 |
Rb/Ba | 1.90 | 18.91 | 7.29 | 5.83 | 40.99 | 20.48 | 0.36 | 0.36 | 0.35 | 0.17 | 0.17 | 0.18 | 0.13 | 0.13 |
Rb/Sr | 3.60 | 3.22 | 42.83 | 24.45 | 196.59 | 3.21 | 3.74 | 3.69 | 3.64 | 0.97 | 0.92 | 0.95 | 0.26 | 0.23 |
Rb/Cs | 42.34 | 107.61 | 34.23 | 69.88 | 140.08 | 99.14 | 58.00 | 59.96 | 58.68 | 33.27 | 32.57 | 32.15 | 11.23 | 11.11 |
K2O/Na2O | 3.84 | 0.16 | 44 | 0.38 | 4.70 | 0.17 | 3.62 | 3.64 | 3.68 | 1.47 | 1.40 | 1.42 | 0.30 | 0.29 |
Nb/Ta | 0.81 | 1.50 | 1.22 | 10.69 | 0.40 | 2.07 | 2.62 | 2.68 | 3 | 5.42 | 6 | 3.78 | 0.26 | 0.27 |
Zr/Hf | 7.50 | 6.46 | 10 | 20 | 4.02 | 6.84 | 2 | 18.33 | 25 | 32.95 | 34.91 | 35.58 | 21.42 | 24.44 |