Hole:
|
195-1201D-
|
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Core, section,
piece, interval (cm):
|
45R-5 (Piece 1, 103–107)
|
46R-4 (Piece 6A, 24–27)
|
48R-2
(Piece 18, 38–41) |
48R-2
(Piece 5, 135–138) |
49R-1
(Piece 14C, 145–147) |
55R-1 (Piece 5R, 103–106)
|
||||||
Analysis label:
|
110-3-2
|
110-3-13
|
110-10-10
|
117-22-3
|
117-29-4
|
134-101-7
|
131-51-4
|
135-112-2
|
144-122-5
|
144-122-6
|
144-122-14
|
144-122-15
|
Description:
|
Micropheno-cryst, rim
|
Micropheno-cryst, rim
|
Phenocryst,
rim
|
Altered phenocryst,
rim
|
Altered phenocryst,
rim
|
Microphenocryst,
core
|
Altered phenocryst,
rim
|
Microlite, core
|
Microlite,
core
|
Microlite,
rim
|
Phenocryst,
core
|
Phenocryst,
rim
|
Major element oxides (wt%): | ||||||||||||
SiO2 | 54.42 | 51.27 | 50.82 | 54.02 | 53.13 | 54.40 | 53.80 | 57.72 | 49.59 | 50.29 | 49.57 | 51.66 |
TiO2 | 0.09 | BDL | 0.05 | 0.08 | 0.07 | BDL | 0.07 | 0.11 | BDL | 0.05 | 0.07 | 0.11 |
Al2O3 | 28.91 | 30.00 | 30.30 | 28.23 | 28.22 | 27.39 | 27.47 | 26.51 | 31.24 | 30.62 | 31.10 | 29.63 |
Fe2O3* | 1.08 | 0.77 | 0.76 | 1.21 | 1.01 | 1.10 | 0.96 | 0.56 | 0.94 | 0.73 | 0.70 | 0.85 |
MgO | 0.24 | 0.38 | 0.38 | 0.21 | 0.14 | 0.27 | 0.59 | 0.03 | 0.33 | 0.33 | 0.28 | 0.26 |
CaO | 12.25 | 14.74 | 15.16 | 12.41 | 11.72 | 12.71 | 12.89 | 9.07 | 16.29 | 15.23 | 15.89 | 14.24 |
Na2O | 3.93 | 3.44 | 2.95 | 5.58 | 4.33 | 4.54 | 3.25 | 6.60 | 2.66 | 2.79 | 2.72 | 3.49 |
K2O | 0.03 | 0.10 | 0.06 | 0.09 | 0.17 | 0.05 | 1.37 | 0.02 | BDL | BDL | BDL | BDL |
Totals: | 100.95 | 100.70 | 100.48 | 101.82 | 98.79 | 100.47 | 100.39 | 100.61 | 101.05 | 100.06 | 100.33 | 100.24 |
Mineralogy (a.f.p.u.): | ||||||||||||
Si | 9.750 | 9.311 | 9.248 | 9.684 | 9.745 | 9.839 | 9.779 | 10.304 | 9.016 | 9.188 | 9.059 | 9.401 |
Ti | 0.012 | 0.000 | 0.007 | 0.011 | 0.009 | 0.000 | 0.010 | 0.014 | 0.000 | 0.007 | 0.009 | 0.015 |
Al | 6.105 | 6.422 | 6.499 | 5.964 | 6.101 | 5.837 | 5.885 | 5.577 | 6.695 | 6.594 | 6.699 | 6.354 |
Fe3+ | 0.146 | 0.105 | 0.104 | 0.163 | 0.140 | 0.150 | 0.131 | 0.075 | 0.128 | 0.101 | 0.096 | 0.117 |
Mg | 0.063 | 0.102 | 0.102 | 0.056 | 0.039 | 0.071 | 0.160 | 0.007 | 0.091 | 0.091 | 0.076 | 0.070 |
Ca | 2.351 | 2.868 | 2.956 | 2.384 | 2.302 | 2.464 | 2.510 | 1.734 | 3.173 | 2.982 | 3.112 | 2.776 |
Na | 1.367 | 1.213 | 1.042 | 1.938 | 1.541 | 1.592 | 1.144 | 2.284 | 0.937 | 0.987 | 0.966 | 1.231 |
K | 0.008 | 0.022 | 0.013 | 0.020 | 0.039 | 0.012 | 0.317 | 0.006 | 0.000 | 0.000 | 0.000 | 0.000 |
Totals: | 19.801 | 20.043 | 19.971 | 20.220 | 19.916 | 19.967 | 19.935 | 20.001 | 20.041 | 19.950 | 20.017 | 19.964 |
Composition (mol%): | ||||||||||||
An | 63.11 | 69.90 | 73.70 | 54.90 | 59.31 | 60.58 | 63.19 | 43.09 | 77.19 | 75.07 | 76.30 | 69.29 |
Ab | 36.68 | 29.56 | 25.98 | 44.64 | 39.70 | 39.14 | 28.81 | 56.77 | 22.81 | 24.86 | 23.67 | 30.71 |
Or | 0.21 | 0.55 | 0.32 | 0.46 | 1.00 | 0.28 | 7.99 | 0.14 | 0.00 | 0.07 | 0.03 | 0.00 |
Notes: Formulas calculated on the basis of 32 oxygens. * = all Fe as Fe2O3. BDL = below detection limit, a.p.f.u. = atoms per formula unit, mol% = molar percentage.