Table 6. Composition of experimental pyroxenes.
| SD | ||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Run # | Temp (ºC) |
N | SiO2 (wt%) |
TiO2 (wt%) |
Al2O3 (wt%) |
FeO (wt%) |
MnO (wt%) |
MgO (wt%) |
CaO (wt%) |
Na2O (wt%) |
Cr2O3 (wt%) |
En (mol%) |
Fs (mol%) |
Wo (mol%) |
Mg# | SD | KD | SiO2 | TiO2 | Al2O3 | FeO | MnO | MgO | CaO | Na2O | Cr2O3 |
| 152-917A-27R-2 (Piece 4, 38-43 cm) |
||||||||||||||||||||||||||
27R2-11 |
1136 |
5 |
52.91 |
0.28 |
1.19 |
18.45 |
0.32 |
23.70 |
3.53 |
0.06 |
64.8 |
28.3 |
6.9 |
69.6 |
1.6 |
0.248 |
0.44 |
0.06 |
0.33 |
1.56 |
0.14 |
0.61 |
1.20 |
0.03 |
||
27R2-12 |
1130 |
3 |
52.71 |
0.35 |
1.21 |
19.12 |
0.29 |
23.55 |
3.68 |
0.05 |
63.8 |
29.1 |
7.2 |
68.7 |
0.9 |
0.220 |
0.33 |
0.05 |
0.03 |
0.91 |
0.02 |
0.29 |
0.75 |
0.01 |
||
27R2-13 |
1120 |
3 |
52.44 |
0.28 |
0.94 |
21.12 |
0.45 |
22.23 |
3.72 |
0.07 |
60.5 |
32.2 |
7.3 |
65.2 |
1.5 |
0.227 |
0.19 |
0.08 |
0.20 |
0.95 |
0.19 |
0.52 |
0.47 |
0.04 |
||
27R2-8 |
1111 |
3 |
53.41 |
0.33 |
0.91 |
21.81 |
0.39 |
21.61 |
3.89 |
0.09 |
59.0 |
33.4 |
7.6 |
63.8 |
0.6 |
0.227 |
0.27 |
0.11 |
0.31 |
0.25 |
0.04 |
0.35 |
0.25 |
0.04 |
||
27R2-19 |
1101 |
12 |
51.83 |
0.42 |
0.89 |
22.01 |
0.36 |
19.88 |
4.61 |
0.09 |
55.9 |
34.8 |
9.3 |
60.8 |
2.9 |
0.238 |
0.66 |
0.09 |
0.17 |
0.53 |
0.04 |
0.93 |
0.45 |
0.04 |
||
| 152-918D-108R-1 (Piece 2B, 54-58 cm) |
||||||||||||||||||||||||||
108R1-6 |
1177 |
16 |
51.82 |
0.30 |
1.88 |
8.92 |
0.21 |
16.58 |
18.97 |
0.20 |
0.17 |
47.1 |
14.2 |
38.7 |
76.8 |
2.4 |
0.266 |
0.67 |
0.05 |
0.15 |
2.52 |
0.03 |
0.56 |
0.44 |
0.04 |
0.05 |
108R1-7 |
1168 |
6 |
50.71 |
0.35 |
2.47 |
10.64 |
0.28 |
17.50 |
17.47 |
0.16 |
0.19 |
48.6 |
16.6 |
34.9 |
74.6 |
3.6 |
0.269 |
0.92 |
0.08 |
0.70 |
1.53 |
0.03 |
1.88 |
2.13 |
0.02 |
0.06 |
108R1-9 |
1158 |
6 |
52.30 |
0.35 |
1.68 |
11.50 |
0.30 |
16.57 |
17.67 |
0.15 |
0.13 |
46.4 |
18.1 |
35.6 |
72.0 |
2.6 |
0.269 |
0.39 |
0.04 |
0.09 |
1.14 |
0.06 |
0.62 |
0.80 |
0.03 |
0.07 |
108R1-10 |
1148 |
9 |
50.95 |
0.60 |
2.72 |
12.65 |
0.33 |
17.35 |
14.05 |
0.17 |
0.19 |
50.2 |
20.6 |
29.2 |
71.0 |
1.0 |
0.237 |
0.82 |
0.24 |
0.62 |
0.96 |
0.03 |
0.96 |
1.79 |
0.04 |
0.03 |
108R1-10 |
1148 |
3 |
52.12 |
0.31 |
1.15 |
18.19 |
0.46 |
21.55 |
5.47 |
0.08 |
0.09 |
60.4 |
28.6 |
11.0 |
67.9 |
0.6 |
0.275 |
0.62 |
0.04 |
0.15 |
0.38 |
0.01 |
0.16 |
0.11 |
0.01 |
0.01 |
108R1-11 |
1136 |
10 |
50.66 |
0.45 |
1.85 |
13.24 |
0.30 |
15.15 |
17.40 |
0.21 |
0.10 |
43.2 |
21.2 |
35.6 |
67.1 |
4.3 |
0.242 |
0.30 |
0.15 |
0.30 |
1.92 |
0.05 |
0.82 |
1.11 |
0.04 |
0.05 |
108R1-12 |
1130 |
4 |
51.10 |
0.50 |
1.70 |
14.88 |
0.32 |
14.54 |
16.85 |
0.20 |
0.09 |
41.5 |
23.9 |
34.6 |
63.5 |
4.3 |
0.248 |
1.21 |
0.12 |
0.12 |
2.18 |
0.07 |
0.77 |
0.91 |
0.06 |
0.08 |
108R1-12 |
1130 |
5 |
52.83 |
0.30 |
1.02 |
19.41 |
0.52 |
21.13 |
5.88 |
0.06 |
0.05 |
58.3 |
30.1 |
11.7 |
66.0 |
0.8 |
0.222 |
0.46 |
0.04 |
0.23 |
0.83 |
0.05 |
0.57 |
1.09 |
0.03 |
0.03 |
108R1-8 |
1111 |
7 |
51.60 |
0.63 |
1.76 |
16.92 |
0.33 |
14.01 |
15.57 |
0.21 |
0.16 |
40.4 |
27.4 |
32.3 |
59.6 |
4.7 |
0.178 |
0.77 |
0.21 |
0.54 |
2.14 |
0.06 |
1.10 |
1.23 |
0.06 |
0.09 |
108R1-8 |
1111 |
4 |
52.88 |
0.32 |
0.89 |
23.25 |
0.54 |
18.91 |
5.32 |
0.06 |
52.9 |
36.5 |
10.7 |
59.2 |
1.7 |
0.181 |
0.4 |
50.04 |
0.07 |
1.29 |
0.04 |
0.46 |
0.79 |
0.01 |
||
108R1-21 |
1103 |
5 |
50.67 |
0.59 |
2.17 |
16.40 |
0.34 |
14.74 |
15.77 |
0.16 |
0.14 |
41.8 |
26.1 |
32.1 |
61.6 |
7.4 |
0.189 |
0.22 |
0.51 |
3.68 |
0.10 |
1.40 |
2.16 |
0.06 |
0.10 |
|
108R1-21 |
1103 |
3 |
52.47 |
0.31 |
0.91 |
21.49 |
0.42 |
20.90 |
4.76 |
0.06 |
57.5 |
33.2 |
9.4 |
63.4 |
0.7 |
0.174 |
0.08 |
0.02 |
0.08 |
0.60 |
0.08 |
0.34 |
0.09 |
0.03 |
||
| 163-989B-10R-7 (Piece 5B, 55-59 cm) |
||||||||||||||||||||||||||
989B-10 |
1162 |
7 |
50.60 |
0.42 |
2.24 |
10.96 |
0.27 |
17.54 |
17.24 |
0.19 |
0.12 |
48.6 |
17.0 |
34.4 |
74.1 |
5.1 |
0.281 |
0.91 |
0.14 |
0.30 |
2.02 |
0.04 |
1.65 |
1.52 |
0.06 |
0.07 |
989B-9 |
1158 |
8 |
50.53 |
0.51 |
3.04 |
10.93 |
0.27 |
17.31 |
17.35 |
0.21 |
0.01 |
48.2 |
17.1 |
34.7 |
73.8 |
3.5 |
0.259 |
1.07 |
0.15 |
1.02 |
1.22 |
0.05 |
1.34 |
1.18 |
0.04 |
0.03 |
989B-5 |
1125 |
5 |
51.05 |
0.48 |
2.59 |
11.20 |
0.23 |
16.33 |
18.26 |
0.21 |
0.06 |
45.6 |
17.8 |
36.6 |
72.2 |
4.7 |
0.183 |
0.86 |
0.10 |
0.74 |
2.03 |
0.06 |
1.20 |
1.28 |
0.05 |
0.04 |
989B-3 |
1101 |
3 |
51.32 |
0.53 |
2.73 |
11.74 |
0.28 |
15.77 |
18.34 |
0.21 |
0.05 |
44.4 |
18.5 |
37.1 |
70.2 |
3.6 |
0.140 |
1.59 |
0.21 |
0.42 |
3.56 |
0.08 |
1.77 |
1.35 |
0.04 |
0.03 |
989B-3 |
1101 |
3 |
51.82 |
0.65 |
1.63 |
21.55 |
0.44 |
17.50 |
7.23 |
0.17 |
50.3 |
34.8 |
14.9 |
59.1 |
2.4 |
0.232 |
0.44 |
0.39 |
0.97 |
1.06 |
0.08 |
1.20 |
1.25 |
0.22 |
||
Notes: Averages of individual analyses and associated one standard deviations (SD) of oxides and Mg#. Temp = the experimental temperature in oC. N = number of analyses. Mg# = Mg/(Mg+Fe) calculated on an atomic basis. En = enstatite, Fs = ferrosilite, Wo = wollastonite; all on a molecular basis. KD is calculated as discussed in text.