Table T11. Representative microprobe analyses of ilmenite from veins, Hole 735B.
 
Core, section, interval (cm):
37R-2,
113-117
66R-3,
128-132
70R-2,
14-16
90R-4,
55-58
118R-1,
76-82
120R-4,
55-60
121R-3,
48-52
124R-1,
111-116
130R-3,
52-59
133R-7,
95-100
137R-4,
112-116
139R-2,
0-5
149R-4,
82-87
159R-7,
66-72
161R-2,
114-119
163R-6,
15-20
168R-2,
140-146
Number of analyses:
3
1
1
3
1
2
2
1
1
1
1
2
1
1
1
2
1
Major element oxide (wt%):
SiO2 0.03 0.67 0.01 0.22 0.29 0.20 0.22 0.12 0.17 0.27 0.11 0.14 0.14 0.12 0.18 0.29 0.17
TiO2 49.72 50.50 49.92 50.94 48.96 48.91 48.61 47.88 47.87 47.68 47.91 47.73 45.99 47.97 47.94 49.54 48.98
Fe2O3 6.77 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND
FeO 41.42 45.89 45.20 45.95 48.64 48.86 48.44 50.19 49.90 50.02 49.28 50.13 51.70 49.97 49.75 47.48 47.59
MnO 0.84 1.36 2.45 1.67 1.05 0.71 0.99 0.83 1.06 0.97 1.91 1.09 1.16 0.91 1.15 1.98 2.15
MgO 0.54 0.88 0.76 0.28 0.18 0.53 0.63 0.12 0.06 0.08 0.05 0.06 0.13 0.04 0.14 0.07 0.25
Total: 99.32 99.30 98.34 99.06 99.13 99.22 98.87 99.14 99.06 99.01 99.25 99.15 99.11 99.02 99.16 99.35 99.14
Number of ions based on 6 O:
Si 0.0018 0.0340 0.0005 0.0111 0.0152 0.0105 0.0113 0.0062 0.0091 0.0143 0.0056 0.0071 0.0072 0.0065 0.0093 0.0148 0.0089
Ti 1.9910 1.9290 1.9401 1.9596 1.9036 1.8990 1.8938 1.8770 1.8775 1.8705 1.8771 1.8728 1.8228 1.8820 1.8772 1.9177 1.9053
Fe+3 0.0435 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND
Fe+2 1.8439 1.9488 1.9530 1.9649 2.1025 2.1089 2.0981 2.1875 2.1758 2.1815 2.1465 2.1872 2.2785 2.1796 2.1659 2.0435 2.0582
Mn 0.0377 0.0585 0.1072 0.0725 0.0460 0.0312 0.0432 0.0365 0.0467 0.0426 0.0841 0.0480 0.0517 0.0403 0.0506 0.0865 0.0941
Mg 0.0425 0.0666 0.0585 0.0213 0.0139 0.0410 0.0483 0.0096 0.0044 0.0063 0.0041 0.0049 0.0099 0.0030 0.0105 0.0051 0.0193
Total: 3.9603 4.0370 4.0594 4.0294 4.0812 4.0905 4.0948 4.1168 4.1134 4.1152 4.1173 4.1200 4.1700 4.1115 4.1135 4.0675 4.0858

Note: ND = not determined.