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Table 2 Representative analyses of silicate phases (wt%)

From: An Almahata Sitta EL3 fragment: implications for the complex thermal history of enstatite chondrites

Phase Occurrence SiO2 TiO2 Al2O3 Cr2O3 FeO MnO MgO CaO Na2O K2O Cl Total Fo/Wo/An En/Ab Fs/Or
Plagioclase Chondrule 62.55 b.d 22.83 b.d 0.35 b.d 0.04 4.88 8.31 0.42 b.d 99.37 23.9 73.7 2.4
Glass Chondrule 58.45 0.21 23.02 b.d 0.30 b.d 0.33 6.66 7.77 0.62 1.73 98.77    
Glass Chondrule 63.51 b.d 19.69 0.07 b.d b.d 7.31 4.24 6.15 0.50 0.15 101.64    
Olivine Chondrule 42.63 b.d b.d b.d 0.06 0.15 56.60 b.d b.d b.d b.d 99.44 99.9   
Diopside Chondrule 56.05 0.05 0.24 0.07 0.39 0.09 19.03 24.51 0.11 b.d b.d 100.54 47.8 51.6 0.6
Diopside Isolated mineral 55.63 b.d 0.24 b.d 0.35 b.d 19.18 24.59 0.15 b.d b.d 100.15 47.7 51.8 0.5
Enstatite Chondrule 58.91 b.d 0.30 b.d b.d b.d 39.22 0.49 0.06 b.d b.d 98.98 0.9 99.1 0.0
Enstatite Isolated mineral 60.03 b.d 0.05 b.d 0.33 b.d 39.34 0.47 b.d b.d b.d 100.22 0.8 98.7 0.5
Quartz Chondrule 96.62 0.07 0.10 b.d 0.13 b.d 0.10 0.08 0.13 b.d b.d 97.22    
  1. b.d.: below detection limits (3σ), 0.03 for SiO2, Al2O3, MgO, and CaO, 0.04 for TiO2, Na2O, and K2O, 0.05 for FeO, Cr2O3, and Cl, and 0.08 for MnO