Table T10. Representative microprobe analyses of prehnite from veins, Hole 735B.
 
Core, section, interval (cm):
168R-7,
131-135
188R-5,
13-18
202R-3,
7-12
202R-3,
7-12
202R-3,
7-12
203R-2,
11-16
205R-1,
123-128
205R-4,
40-45
206R-4,
139-144
206R-4,
139-144
207R-4,
102-107
Number of analyses:
5
2
2
2
2
1
2
3
2
1
2
Major element oxide (wt%):
SiO2 43.45512 43.03785 43.29455 43.04625 43.273 43.0891 43.19925 43.22076667 42.9374 43.0476 43.21255
Al2O3 23.41566 23.22165 24.0392 24.15385 23.84585 22.3996 23.4575 23.83323333 23.47915 22.5933 23.3665
FeO 0.23066 0.8783 0.29475 0.34375 0.52295 2.4047 0.7681 0.181466667 1.1147 1.8023 0.22015
MnO 0.02678 0.01495 0.05355 0.05755 0.02845 0.0003 0.0996 0.040966667 0.0403 0 0.02105
MgO 0.6048 0.04315 0 0.1088 0.02295 0.0632 0.3468 0.0566 0.18835 0.0765 0.30365
CaO 26.46558 27.78155 27.6795 27.82065 27.46635 27.1898 27.35615 26.99063333 27.4752 27.5195 26.03595
Na2O 0.05392 0.1023 0.1026 0.02625 0.032 0.0964 0.01035 0.169533333 0.04275 0.1939 0.095
Total: 94.1986 95.07975 95.46415 95.5571 95.19155 95.2431 95.23775 94.4932 95.27785 95.2331 93.15985
Number of ions based on 24 (O, OH):
Si 6.056959304 5.994232857 5.986118396 5.94880341 5.996045443 6.010669101 5.990707292 6.02547836 5.963950123 6.00669747 6.080739975
AlIV 1.943040696 2.005767143 2.013881604 2.05119659 2.003954557 1.989330899 2.009292708 1.97452164 2.036049877 1.99330253 1.919260025
AlVI 1.903314776 1.806022962 1.903307804 1.882784699 1.890046681 1.69320905 1.824787041 1.941136146 1.807521939 1.722206248 1.955863414
Al ions 3.846355472 3.811790105 3.917189408 3.933981289 3.894001238 3.682539949 3.834079749 3.915657786 3.843571817 3.715508777 3.875123439
Fe+3 0.024183231 0.092050007 0.03070182 0.03574735 0.054576279 0.252417937 0.080037155 0.019019176 0.116495941 0.189242123 0.023282569
Ca 3.951867978 4.14534846 4.099945107 4.118944516 4.077261099 4.063341548 4.06443569 4.030761252 4.088616104 4.113857779 3.925197485
Total: 13.87936599 14.04342143 14.03395473 14.03747657 14.02188406 14.00896854 13.96925989 13.99091657 14.01263398 14.02530615 13.90434347