Table T7. Representative microprobe analyses of chlorite from veins, Hole 735B.
 
Core, section, interval (cm):
19R-1,
140-146
31R-3,
4-10
31R-3,
4-10
37R-2,
113-117
57R-4,
123-133
58R-3,
0-8
63R-1,
106-107
63R-1,
106-107
64R-2,
100-105
64R-4,
66-70
67R-2,
113-125
69R-5,
31-41
119R-5,
62-68
120R-2,
99-104
120R-2,
99-104
120R-4,
55-60
121R-1,
81-86
Number of analyses:
2
1
1
2
1
2
1
2
2
1
1
1
1
1
1
2
3
Color:
Green
Colorless
Colorless
Colorless
Colorless
Green
Lt Green
Lt Green
Green
Green
Green
Lt Green
Green
Green
Green
Green
Green
Major element oxide (wt%):
SiO2 24.85 29.74 29.11 26.37 25.99 30.52 26.72 26.67 26.00 26.56 25.51 27.19 26.65 25.68 27.12 25.71 25.48
TiO2 0.10 0.00 0.00 0.02 0.09 0.02 0.01 0.00 0.00 0.03 0.09 0.00 0.08 0.00 0.02 0.00 0.06
Al2O3 19.16 20.10 18.11 18.70 18.65 19.70 18.57 18.57 19.53 18.35 19.35 19.49 16.70 17.70 16.79 18.16 18.43
FeO 27.85 17.25 13.30 24.62 25.48 17.11 20.43 22.22 24.68 24.77 26.28 19.12 26.16 28.22 27.92 31.00 31.32
MnO 0.19 0.23 0.08 0.28 1.45 0.24 0.80 1.03 0.50 1.30 1.05 0.27 0.32 0.61 0.39 0.28 0.40
MgO 14.04 18.64 25.34 15.99 14.51 19.18 19.06 17.68 16.00 15.33 14.98 20.15 14.82 11.94 12.45 11.65 11.37
CaO 0.05 0.74 0.00 0.09 0.02 0.35 0.02 0.04 0.01 0.02 0.01 0.03 0.06 0.21 0.15 0.05 0.08
Na2O 0.05 0.51 0.00 0.07 0.08 1.01 0.01 0.05 0.10 0.04 0.05 0.00 0.12 0.19 0.21 0.15 0.16
K2O 0.01 0.00 0.00 0.02 0.01 0.00 0.03 0.00 0.02 0.01 0.00 0.00 0.00 0.01 0.01 0.01 0.00
Total: 86.30 87.21 85.94 86.16 86.29 88.14 85.66 86.25 86.81 86.41 87.32 86.25 84.93 84.57 85.06 87.00 87.30
Number of ions based on 36 (O, OH):
Si 5.4282 6.0035 5.8554 5.6517 5.6261 6.0884 5.6462 5.6546 5.5345 5.7061 5.4685 5.6343 5.8583 5.7538 5.9976 5.6575 5.6022
Ti 0.0157 0.0000 0.0000 0.0027 0.0139 0.0033 0.0018 0.0000 0.0000 0.0048 0.0145 0.0000 0.0136 0.0000 0.0035 0.0002 0.0091
AlIV 2.5718 1.9965 2.1446 2.3483 2.3739 1.9116 2.3538 2.3454 2.4655 2.2939 2.5315 2.3657 2.1417 2.2462 2.0024 2.3425 2.3978
AlVI 2.3601 2.7854 2.1487 2.3762 2.3846 2.7198 2.2719 2.2946 2.4343 2.3523 2.3572 2.3942 2.1854 2.4278 2.3786 2.3680 2.3786
Al ions 4.9319 4.7820 4.2933 4.7245 4.7585 4.6315 4.6257 4.6400 4.8998 4.6462 4.8887 4.7599 4.3271 4.6740 4.3810 4.7105 4.7764
Fe+2 5.0859 2.9117 2.2370 4.4208 4.6123 2.8541 3.6096 3.9399 4.3928 4.4498 4.7107 3.3130 4.8085 5.2867 5.1658 5.7045 5.7580
Mn 0.0359 0.0393 0.0136 0.0510 0.2665 0.0398 0.1438 0.1851 0.0893 0.2365 0.1906 0.0474 0.0593 0.1148 0.0732 0.0514 0.0742
Mg 4.5698 5.6096 7.5989 5.0979 4.6828 5.7053 6.0039 5.5876 5.0777 4.9099 4.7873 6.2249 4.8574 3.9870 4.1063 3.8209 3.7269
Ca 0.0114 0.1600 0.0000 0.0212 0.0038 0.0753 0.0056 0.0087 0.0023 0.0046 0.0023 0.0067 0.0152 0.0515 0.0359 0.0107 0.0194
Na 0.0232 0.1996 0.0000 0.0279 0.0345 0.3905 0.0059 0.0194 0.0393 0.0167 0.0208 0.0000 0.0507 0.0835 0.0908 0.0630 0.0691
Total: 20.1021 19.7057 19.9982 19.9976 19.9984 19.7881 20.0425 20.0354 20.0356 19.9747 20.0834 19.9861 19.9902 19.9513 19.8542 20.0189 20.0354
Mg# 47.3 65.8 77.3 53.5 50.4 66.7 62.5 58.6 53.6 52.5 50.4 65.3 50.3 43.0 44.3 40.1 39.3

Only a portion of this table appears here. The entire table is available in PDF format.