Table T11.
Representative analyses of biotite phenoclasts.
Sample:
180-1118A-68R-3,
24-28 cm
180-1116A-6R-1,
37-39 cm
180-1108B-33R-1,
41-44.5 cm
Analysis number:
1
2
1
2
1
Occurrence:
Phenoclast
Phenoclast
Phenoclast
Phenoclast
Phenoclast
Major element oxide (wt%):
SiO2
37.24
37.77
37.39
37.48
38.02
TiO2
3.42
3.30
4.40
4.17
4.89
Cr2O3
0.25
0.22
0.34
0.22
0.32
Al2O3
14.41
14.67
14.69
14.81
14.45
Fe2O3
0.00
0.00
0.00
0.00
0.00
FeO
15.24
15.38
13.97
13.57
10.12
MnO
0.25
0.24
0.25
0.23
0.14
MgO
14.75
14.77
16.48
16.24
18.49
NiO
0.08
0.09
0.17
0.11
0.13
CaO
0.29
0.12
0.25
0.17
0.27
Na2O
0.00
0.65
0.90
0.86
0.32
K2O
9.42
9.52
8.98
9.19
9.78
H2O
3.94
3.98
4.06
4.03
4.08
Total:
99.29
100.71
101.88
101.08
101.01
Cation (atoms/formula unit):
Si
2.833
2.847
2.758
2.788
2.794
Ti
0.195
0.187
0.244
0.233
0.271
Cr
0.015
0.013
0.019
0.013
0.018
Al
1.299
1303
1277
1298
1251
Fe2+
0.969
0.969
0.862
0.844
0.622
Mn
0.016
0.015
0.015
0.014
0.008
Mg
1.672
1659
1812
1801
2025
Ni
0.005
0.005
0.01
0.006
0.007
Ca
0.024
0.009
0.019
0.014
0.022
Na
0.000
0.095
0.128
0.124
0.045
K
0.914
0.915
0.845
0.872
0.917
OH-
2.000
2.000
2.000
2.000
2.000