Table T3. Selected analyses of ilmenite, Sites 1117, 1118, and 1109.
Core, section, interval (cm): | 180-1117A-11R-1, 40-44 | 180-1118A-74R-2, 133-138 | 180-1118A-76R-1, 28-38 | 180-1109D-51R-1, 58-67 | 180-1109D-51R-4, 6-9 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Matrix: | Gabbro | Coarse-grained diabase | Coarse-grained diabase | Fine-grained diabase | Fine-grained diabase | ||||||||||
Mineral: | Ilmenite | Ilmenite | Ilmenite | Ilmenite | Ilmenite | Ilmenite | Ilmenite | Ilmenite | Ilmenite | Ilmenite | Ilmenite | ||||
Major element oxide (wt%): | |||||||||||||||
SiO2 | 0.12 | 0.11 | 0.85 | 0.19 | 0.56 | 1.31 | 0.11 | 2.7 | 0.34 | 0.08 | 0.09 | ||||
Al2O3 | 2 | 2 | 1 | 2 | 3 | 3 | 1 | 2 | 2 | 1 | 1 | ||||
MgO | 0.05 | 0.07 | 0.10 | 0.00 | 0.08 | 0.17 | 0.40 | 0.04 | 0.66 | 0.00 | 0.42 | ||||
FeO | 61.58 | 68.74 | 71.61 | 68.62 | 66.19 | 66.55 | 71.30 | 62.72 | 65.58 | 61.36 | 74.25 | ||||
MnO | 1.64 | 0.02 | 2.77 | 2.49 | 3.08 | 1.31 | 0.43 | 5.40 | 3.95 | 0.61 | 0.32 | ||||
TiO2 | 31.87 | 27.44 | 18.50 | 22.52 | 21.09 | 21.12 | 23.56 | 21.34 | 21.93 | 32.68 | 18.73 | ||||
CaO | 0.03 | 2.63 | 0.61 | 0.34 | 0.42 | 0.29 | 0.01 | 2.42 | 0.04 | 0.26 | 0.01 | ||||
Na2O | 0 | 0.082 | 0.12 | 0.04 | 0.08 | 0.03 | 0 | 0.04 | 0 | 0 | 0 | ||||
K2O | 0 | 0.014 | 0 | 0 | 0 | 0.02 | 0 | 0.014 | 0 | 0 | 0.02 | ||||
Total | 95.12 | 96.21 | 93.61 | 94 | 90.87 | 89.32 | 95.30 | 91.94 | 91.50 | 94.91 | 93.33 | ||||
Al | 0.118 | 0.116 | 0.09 | 0.11 | 0.18 | 0.21 | 0.06 | 0.16 | 0.14 | 0.04 | 0.07 | ||||
Ti | 1.36 | 0.81 | 0.8 | 0.97 | 0.93 | 0.93 | 1 | 0.95 | 0.95 | 1.43 | 0.81 | ||||
Fe3+ | 0.152 | 1.258 | 1.303 | 0.946 | 0.966 | 0.923 | 1.005 | 0.932 | 0.960 | 0.104 | 1.311 | ||||
Fe2+ | 2.78 | 2.3 | 2.16 | 2.35 | 2.27 | 2.35 | 2.45 | 2.18 | 2.2 | 2.87 | 2.26 | ||||
Mn | 0.15 | 1.26 | 1.3 | 0.95 | 0.97 | 0.92 | 0.93 | 0.93 | 0.96 | 0.1 | 1.31 | ||||
Mg | 0.08 | 0 | 0.14 | 0.12 | 0.15 | 0.07 | 0.02 | 0.27 | 0.19 | 0.03 | 0.02 | ||||
Ca | 0.004 | 0.007 | 0.009 | 0 | 0.007 | 0.015 | 0.033 | 0.003 | 0.057 | 0 | 0.036 |