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Table T4 (continued).

Sample
Detection
limit
Procedural
blank
MRG-1
Run 1
Run 2
Average
Preferred
values
Precision
(%)
Accuracy
(%)
Major element oxide (wt%):
SiO2 0.34 BDL 40.63 39.56 40.09 39.70 1.90 0.99
TiO2 0.03 BDL 3.80 3.79 3.80 3.78 0.10 0.46
Al2O3 0.14 BDL 8.78 8.71 8.75 8.62 0.55 1.48
Fe2O3T 0.28 BDL 18.17 17.89 18.03 18.16 1.11 –0.70
MgO 0.30 BDL 13.52 13.66 13.59 13.72 0.74 –0.90
MnO 0.01 0.10 0.17 0.17 0.17 0.17 0.84 –0.20
CaO 0.16 BDL 14.81 14.82 14.81 14.87 0.06 –0.41
Na2O 0.06 0.09 0.77 0.72 0.74 0.74 4.46 0.92
K2O 0.01 BDL 0.18 0.17 0.17 0.18 3.83 –3.07
P2O5 0.05 0.07 0.09 ND 0.09 0.07 27.68 30.65
Totals:
 100.92 99.49 100.25 100.00    
Trace element (ppm):
Sc 1.37 BDL 66 55 60 56 12.83 8.12
V 16.49 49.71 546 512 529 524 4.55 0.84
Cr 12.37 15.64 480 460 470 444 3.09 5.84
Co 6.46 BDL NA 109 109 87 3.23 25.73
Ni 27.17 BDL 212 202 207 183 3.40 12.93
Cu 8.29 BDL 128 153 141 133 12.65 6.09
Zn 1.99 2.16 170 ND 170 189 0.61 –9.89
Sr 2.62 13.83 277 275 276 270 0.61 2.30
Y 3.72 1.72 13 13 13 13 1.50 –0.70
Zr 3.13 BDL 102 110 106 104 4.84 1.56
Ba 2.07 7.42 52 50 51 53 2.69 –3.35

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