Table T9. Representative microprobe analyses of epidote from veins, Hole 735B.
 
Core, section, interval (cm):
37R-2,
113-117
42R-3,
27-31
43R-4,
129-133
44R-1,
35-47
44R-1,
35-47
47R-2
92-100
57R-3,
124-130
57R-4,
123-133
60R-4,
112-120
63R-1,
106-107
63R-6,
98-106
64R-2,
100-105
67R-2,
113-125
68R-2,
68-75
120R-1,
85-91
122R-4,
0-5
138R-4,
59-63
Number of analyses:
2
1
1
2
1
3
1
1
1
3
1
2
2
2
1
1
1
Major element oxide (wt%):
SiO2 38.37 38.41 38.43 38.25 38.77 38.10 37.93 38.23 37.79 38.38 38.58 38.74 38.20 38.75 38.71 38.11 38.29
TiO2 0.07 0.09 0.06 0.04 0.10 0.07 0.04 0.01 0.06 0.07 0.06 0.10 0.11 0.04 0.07 0.37 0.14
Al2O3 27.58 29.42 28.06 27.27 29.68 28.30 29.88 27.37 29.10 29.11 30.59 30.73 29.07 29.59 26.47 24.55 25.41
Fe2O3 6.70 4.95 6.52 7.44 4.10 6.00 4.72 7.63 5.71 5.28 3.62 3.14 6.35 5.06 8.26 9.07 8.86
MnO 0.04 0.23 0.02 0.08 0.17 0.06 0.28 0.05 0.08 0.16 0.11 0.16 0.17 0.18 0.07 0.00 0.18
MgO 0.00 0.00 0.00 0.01 0.06 0.00 0.00 0.00 0.00 0.01 0.00 0.05 0.00 0.00 0.07 0.13 0.01
CaO 23.85 23.34 23.33 23.37 23.64 23.44 23.02 23.05 23.68 23.34 24.27 24.28 23.44 23.03 24.07 23.87 24.16
Total: 98.53 98.36 98.35 98.37 98.46 97.88 97.77 98.24 98.34 98.28 97.23 97.19 97.34 96.63 97.72 96.09 97.05
Number of ions based on 12.5 O:
Si 3.0212 3.0055 3.0227 3.0205 3.0225 3.0095 2.9826 3.0201 2.9711 3.0089 2.9860 2.9944 2.9775 3.0202 3.0322 3.0502 3.0339
Ti 0.0040 0.0052 0.0038 0.0026 0.0058 0.0039 0.0026 0.0008 0.0038 0.0040 0.0035 0.0058 0.0062 0.0021 0.0044 0.0224 0.0081
AlIV 0.0000 0.0000 0.0000 0.0000 0.0000 0.0060 0.0174 0.0000 0.0289 0.0002 0.0140 0.0056 0.0225 0.0000 0.0000 0.0000 0.0000
AlVI 2.5594 2.7130 2.6010 2.5382 2.7268 2.6285 2.7515 2.5489 2.6671 2.6893 2.7763 2.7933 2.6479 2.7176 2.4427 2.3156 2.3727
Al ions 2.5594 2.7130 2.6010 2.5382 2.7268 2.6345 2.7689 2.5489 2.6960 2.6895 2.7903 2.7989 2.6705 2.7176 2.4427 2.3156 2.3727
Fe+3 0.3972 0.2915 0.3858 0.4423 0.2402 0.3564 0.2791 0.4537 0.3376 0.3114 0.2108 0.1829 0.3725 0.2965 0.4876 0.5463 0.5282
Mn 0.0026 0.0155 0.0016 0.0056 0.0115 0.0040 0.0186 0.0032 0.0051 0.0108 0.0072 0.0105 0.0112 0.0116 0.0043 0.0000 0.0123
Mg 0.0000 0.0000 0.0000 0.0008 0.0071 0.0000 0.0000 0.0000 0.0000 0.0016 0.0000 0.0058 0.0000 0.0000 0.0078 0.0154 0.0016
Ca 2.0122 1.9565 1.9655 1.9769 1.9746 1.9832 1.9392 1.9513 1.9948 1.9607 2.0124 2.0108 1.9573 1.9230 2.0195 2.0467 2.0509
Total: 7.9967 7.9873 7.9804 7.9869 7.9884 7.9914 7.9910 7.9780 8.0085 7.9869 8.0102 8.0091 7.9951 7.9709 7.9985 7.9967 8.0077