Appendix A. Table 1

Table 1. Mean electron microprobe and laser ablation ICP-MS analyses of glasses from El Hoyazo enclaves (SE Spain), the Kerala (S India) and Ronda (S Spain) migmatites, and some melting experiments from the literature.

Ocurrence Enclave Enclave Enclave Enclave Enclave Migm KKB Migm KKB Exp melt Migm Ronda Migm Ronda
Microstructure MI in Pl MI in Grt MI in Crd MI in Ilm Matrix Gl Nanogr MI Glassy MI   Nanogr MI Glassy MI
Electron microprobe analyses (concentrations in wt%)
No. analyses 145 43 51 18 48 37a 7 1b 10c 3
SiO2 72.90 71.51 73.56 70.68 70.60 73.08 75.41 72.28 70.01 69.69
TiO2 0.08 0.10 0.07 0.31 0.17 0.08 0.11 0.39 0.07 0.08
Al2O3 12.87 14.45 14.07 15.69 13.99 13.31 12.09 13.75 11.30 11.78
FeO* 1.14 1.66 1.28 2.58 1.55 3.03 1.58 3.80 1.59 1.20
MnO 0.01 0.07 0.04 0.07 0.01 0.03 0.03 0.00 0.11 0.09
MgO 0.15 0.04 0.04 0.13 0.14 0.76 0.25 0.55 0.13 0.07
CaO 0.22 0.60 0.94 0.96 0.36 0.60 0.08 0.69 0.43 0.39
Na2O 2.86 3.62 3.41 3.55 2.96 1.14 0.62 0.81 2.52 3.09
K2O 5.10 4.92 4.87 4.92 5.54 6.76 7.73 7.73 3.95 4.19
P2O5 0.19 0.34 0.20 0.31 0.29 0.09 0.04 n.d 0.33 0.18
F 0.06 0.07 0.05 0.07 0.06 n.d. n.d. n.d. n.d. n.d.
Cl 0.01 0.01 0.45 0.00 0.01 0.25 n.d. n.d. n.d. n.d.
O=F -0.02 -0.03 -0.02 -0.03 -0.02          
O=Cl 0.00 0.00 -0.10 0.00 0.00 -0.05        
H2O** 4.42 2.61 1.10 0.82 4.32 0.82 2.06 0.00 9.56 9.24
ASI 1.22 1.17 1.12 1.22 1.22 1.30 1.27 1.25 1.23 1.15
#K 0.54 0.47 0.48 0.48 0.55 0.79 0.89 0.86 0.51 0.47
#Mg 0.19 0.04 0.04 0.08 0.13 0.30 0.15 0.20 0.12 0.09
Laser ablation ICP-MS analyses (concentrations in ppm)
No. analyses 18 to 22 8 to 12 4 3 20 to 28          
Rb 212 237 250 206 211 n.d. n.d. n.d. n.d. n.d.
Sr 28 112 135 242 82 n.d. n.d. n.d. n.d. n.d.
Ba 80 235 543 512 355 n.d. n.d. n.d. n.d. n.d.
V 0.72 0.16 2.0 9.7 2.3 n.d. n.d. n.d. n.d. n.d.
Zr 24 28 7.7 34 37 n.d. n.d. n.d. n.d. n.d.
Th 1.53 1.1 0.83 3.3 3.5 n.d. n.d. n.d. n.d. n.d.
U 4.0 4.2 3.9 20 2.9 n.d. n.d. n.d. n.d. n.d.
Sum REE 18 21 35 69 44 n.d. n.d. n.d. n.d. n.d.
Eu/Eu* 0.69 2.5 1.2 1.2 1.4 n.d. n.d. n.d. n.d. n.d.
(La/Lu)N 11 32 4.6 2.2 13 n.d. n.d. n.d. n.d. n.d.
* Total Fe as FeO
** 100-total
a Remelted at ~ 1040 °C with HT stage
b From Droop et al. 2003
c Remelted at 700 °C, 5 kbar with piston cylinder
#K=mol. K2O/(K2O+Na2O)
#Mg=mol. MgO/(MgO+FeO*)
Sum REE refers to total rare earth element concentration, and Eu/Eu* to the Europium anomaly
(La/Lu)N refers to the ratio Lanthanum/Lutetium, normalized to the chondritic values

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