Representative chemical analyses of garnet spots (1–5). Their average values are also presented. wt. % 1 2 3 4 5 SiO2 TiO2 Al2O3 Cr2O3 FeO 39.53 0.00 20.64 0.00 2.26 39.06 0.76 21.16 0.00 1.89 39.11 0.89 20.82 0.00 1.97 39.10 0.00 19.87 0.00 3.62 39.60 0.00 20.74 0.00 2.17 MnO ...