Table 1.
EMP analyses of starting material glasses and experimental samples. The “halogen-free” glass was used as starting material for the synthesis of three “CMAS_start” glasses, which contain various amounts of H2O (Table 2) and halogens. These were used as starting materials for the partitioning experiments. Values represent the average of ten single measurements in the starting materials and five single measurements in each phase of each partitioning experiment. Uncertainties are given as 2σ. (b.d. = below detection limit). Crystal/melt ratios were determined via image analyses of BSE images using the software “ImageJ”
| Sample | SiO2 | Al2O3 | MgO | CaO | F | Cl | Total | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Starting materials | ||||||||||||
| Halogen-free | 46.88 (51) | 18.89 (33) | 18.39 (26) | 17.02 (31) | b.d | b.d | 101.18 (95) | |||||
| CMAS_start_dry | 46.19 (57) | 18.70 (44) | 18.24 (19) | 17.46 (30) | 0.23 (4) | 0.86 (2) | 100.82 (118) | |||||
| CMAS_start_05 | 45.74 (57) | 18.56 (47) | 17.87 (33) | 17.36 (23) | 0.27 (4) | 0.58 (2) | 99.80 (145) | |||||
| Sample | SiO2 | Al2O3 | MgO | CaO | F | Cl | Total | Crystal/melt | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Partitioning experiments | ||||||||||||
| Melt | ||||||||||||
| CMAS_dry | 45.94 (62) | 17.67 (22) | 13.16 (30) | 21.84 (41) | 0.74 (4) | 2.24 (12) | 101.56 (100) | |||||
| CMAS_05 | 45.80 (88) | 19.79 (33) | 13.57 (38) | 19.37 (62) | 0.38 (6) | 0.76 (6) | 99.67 (156) | |||||
| CMAS_2 | 45.03 (86) | 19.80 (50) | 14.16 (24) | 18.75 (43) | 0.30 (4) | 0.39 (4) | 98.43 (153) | |||||
| Olivine | ||||||||||||
| CMAS_dry | 43.12 (68) | b.d | 57.69 (108) | 0.58 (14) | b.d | b.d | 101.39 (109) | 0.12 (4) | ||||
| CMAS_05 | 42.84 (44) | b.d | 57.71 (71) | 0.46 (3) | b.d | b.d | 101.01 (98) | 0.15 (5) | ||||
| CMAS_2 | 42.20 (41) | 0.13 (10) | 56.84 (85) | 0.44 (8) | b.d | b.d | 99.61 (127) | 0.21 (4) | ||||
| Anorthite | ||||||||||||
| CMAS_dry | 43.67 (87) | 35.69 (19) | 0.28 (17) | 19.84 (53) | b.d | b.d | 99.84 (108) | 0.34 (3) | ||||
| CMAS_05 | 43.58 (50) | 35.81 (30) | 0.30 (5) | 19.79 (44) | b.d | b.d | 99.48 (104) | 0.06 (6) | ||||
| Clinopyroxene | ||||||||||||
| CMAS_dry | 52.09 (65) | 6.22 (27) | 18.09 (117) | 24.06 (53) | b.d | b.d | 100.46 (114) | 0.04 (2) | ||||