Table T1. Compositions of spinifex-textured xenoliths and their hosts.
Major Element/Oxide:
SiO2
TiO2
Al2O3
FeO (total)
MnO
MgO
CaO
Na2O
K2O
P2O5
S (total)
LOD
LOI
Total
CSIRO number
Units:
Method:
wt%
XRF
wt%
XRF
wt%
XRF
wt%
XRF
wt%
XRF
wt%
XRF
wt%
XRF
wt%
XRF
wt%
XRF
wt%
XRF
wt%
ICP-AES
wt%
wt%
wt%
Spinifex xenoliths                                
142421B*   50.80 0.42 12.76 8.12 0.18 13.43 10.59 2.08 0.23 0.056 0.06 0.24 0.12 99.08  
142652D†   42.75 0.40 11.28 6.72 0.026 0.71 8.90 0.56 0.25 0.070 11.53 2.20 10.87 96.26  
Host rocks                                
142421A*   66.39 0.72 14.28 4.93 0.15 1.11 3.42 5.01 1.65 0.175 0.01 0.25 1.15 99.24  
142652C†   64.31‡ 0.64‡ 14.09‡ 6.00‡ 0.008‡ 0.33‡ 1.32‡ 0.62‡ 0.20‡ 0.025‡ 6.19 NA NA 93.75  
142652E†   62.22‡ 0.72‡ 16.46‡ 4.79‡ 0.007‡ 0.23‡ 1.80‡ 0.26‡ 0.22‡ 0.133‡ 5.06 NA NA 91.90  
Trace element: Li Be Cl Sc V Cr Co Ni Cu Zn Ga Ge As Rb Sr
CSIRO number Units:Method: ppmICP-AES ppmICP-AES ppmXRF ppmICP-MS ppmICP-MS ppmICP-MS ppmICP-MS ppmICP-MS ppmICP-AES ppmICP-AES ppmICP-MS ppmICP-MS ppmICP-MS ppmICP-MS ppmICP-AES
Spinifex xenoliths                                
142421B   3.1 0.31 6690 36 203‡ 800 57 328‡ 107 91 12 2.5 8.7 3.0 121
142652D   1.14 0.63 2818 25 169‡ 552 40 133‡ 40 44 16 1.4 18 4.4 298
Host rocks                                
142421A   12.7 1.11 4500 16 44 17 8.3 9.1 27 91 21 3.1 4.8 32 290
142652C   0.92 0.72 NA 6.2 29 16 5.6 6.5 18 1.0 19 2.2 6.6 3.2 139
142652E   0.58 0.93 NA 5.8 37 18 5.6 6.8 46 20 19 1.7 25 2.5 131
Trace element: Y Zr Mo Cd In Sb Te Cs Ba La Ce Pr Nd Sm Eu
CSIRO number Units:Method: ppmICP-AES ppmXRF ppmICP-MS ppbICP-MS ppbICP-MS ppbICP-MS ppbICP-MS ppbICP-MS ppmICP-AES ppmICP-MS ppmICP-MS ppmICP-MS ppmICP-MS ppmICP-MS ppmICP-MS
Spinifex xenoliths                                
142421B   12 23 1.1 315 131 701 20 90 115 2.03 4.98 0.81 4.19 1.35 0.537
142652D   12 30 3.0 76 22 868 3779 231 136 1.90 5.19 0.88 4.81 1.60 0.637
Host rocks                                
142421A   30 107 2.3 383 87 309 10 794 303 13.50 30.27 4.46 21.31 5.29 1.702
142652C   29 120‡ 0.63 73 146 495 1253 186 666 3.38 8.49 1.36 6.84 2.04 0.650
142652E   11 114‡ 1.6 76 25 738 2432 182 206 0.59 1.69 0.33 2.17 0.95 0.326
Trace element: Gd Tb Dy Ho Er Tm Yb Lu Tl Pb Bi Th U    
CSIRO number Units:Method: ppmICP-MS ppmICP-MS ppmICP-MS ppmICP-MS ppmICP-MS ppmICP-MS ppmICP-MS ppmICP-MS ppbICP-MS ppmICP-MS ppbICP-MS ppbICP-MS ppbICP-MS    
Spinifex xenoliths                                
142421B   1.75 0.360 2.51 0.558 1.58 0.227 1.61 0.249 29 2.7 43 197 126    
142652D   2.04 0.366 2.27 0.470 1.22 0.160 0.98 0.135 453 21 104 113 354    
Host rocks                                
142421A   5.99 1.037 6.96 1.491 4.45 0.641 4.44 0.703 251 7.2 98 1527 832    
142652C   2.08 0.321 1.78 0.367 0.99 0.136 0.89 0.133 71 7.3 48 722 309    
142652E   1.04 0.172 0.92 0.160 0.43 0.053 0.32 0.048 128 11 50 209 218    

Notes: * = dredge MD-138; 3°43.60´S 151°40.35´E. † = ODP Sample 193-1188A-7R-2 (Piece 1, 17–21 cm). Sample 142421A = dacite glass, Sample 142652C = handpicked white kernel of fragment in brecciated host rock. Sample 142652E = handpicked pale green rims from fragments in brecciated host rock. ‡ = ICP-AES data, cited where analyses by the primary method were over range or unavailable. LOD = loss on drying at 105°C (samples pre-dried at ~40°C). LOI = loss on ignition at 1050°C. NA = not analyzed.