Table T2. Major element constitution of samples representing main alteration categories at PACMANUS.
Core, section:
1188A-9R-3
1188A-9R-3
1188F-15Z-1
1188F-26Z-1
1188F-26Z-1
1188F-26Z-1
1189A-1R-1
Piece, interval (cm):
2, 22–26
2, 22–26
16, 139–146
4, 62–64
4, 62–64
4, 62–64
2, 10–14
Depth (mbsf):
70.73
70.73
251.79
300.72
300.72
300.72
31.20
CSIRO:
142654a
142654b
142676
142684a
142684b
142684d
142806
Description:
White, bleached
rock with pyrophyllite
Greenish gray
kernel (Fig.
F8B)
Mottled rock
with pyrophyllite
Kernel
Transition zone
Pale selvage
(Fig.
F8A)
Pale gray altered perlite
from Stockwork Zone
Alteration category:
XB
X-K
YB
Y-K
Y-T
Y-S
Z
Major element (wt%):
SiO2 63.2 61.2 57.5 62.2 60.7 55.9 36.0
TiO2 0.56 0.54 0.75 0.80 0.78 0.77 1.06
Al2O3 13.7 12.8 14.0 13.8 13.8 13.7 20.8
FeO (total) 1.11 4.6 6.3 4.6 5.0 0.67 13.6
MnO 0.01 0.02 0.01 0.05 0.02 0.01 0.0
MgO 0.24 0.55 0.17 5.9 3.3 0.35 4.2
CaO 5.7 2.9 3.6 1.2 2.1 8.5 0.4
Na2O 0.64 0.77 0.44 0.43 0.43 0.53 0.8
K2O 0.34 2.29 0.65 1.80 2.4 2.5 5.0
P2O5 0.12 0.14 0.22 0.30 0.35 0.22 0.3
S (total) 4.4 5.6 8.0 2.0 4.1 5.2 11.0
LOI 10.5 8.5 10.7 6.7 7.7 10.0 14.0
Total* 100.5 99.9 102.4 99.8 100.6 98.3 107.0
Zr/TiO2 192 205 130 115 118 108 145

Notes: See Table T1 for alteration categories. LOI = loss on drying (105C) + loss on ignition (1050C). * = uncorrected for oxygen in sulfides allocated to FeO(t) or not allocated to S(t) for sulfates.