XRF at the WSU GeoAnalytical Lab - University of Western Ontario
XRF at the WSU GeoAnalytical Lab - University of Western Ontario
XRF at the WSU GeoAnalytical Lab - University of Western Ontario
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Reproducibility <strong>of</strong> major and trace elements using graphite double fusions (n = 850)<br />
Difference from average (wt%)<br />
Difference from average (wt%)<br />
0.015<br />
0.010<br />
0.005<br />
0.000<br />
-0.005<br />
-0.010<br />
-0.015<br />
0.15<br />
0.10<br />
0.05<br />
0.00<br />
-0.05<br />
-0.10<br />
-0.15<br />
P 2O 5<br />
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6<br />
Concentr<strong>at</strong>ion (wt %)<br />
CaO<br />
0 4 8 12 16 20<br />
Concentr<strong>at</strong>ion (wt %)<br />
Difference from average (ppm)<br />
Difference from average (ppm)<br />
8<br />
6<br />
4<br />
2<br />
0<br />
-2<br />
-4<br />
-6<br />
-8<br />
10<br />
8<br />
6<br />
4<br />
2<br />
0<br />
-2<br />
-4<br />
-6<br />
-8<br />
-10<br />
0 20 40 60 80 100<br />
Rb<br />
Nb<br />
Concentr<strong>at</strong>ion (ppm)<br />
0 100 200 300 400 500<br />
Concentr<strong>at</strong>ion (ppm)<br />
Duplic<strong>at</strong>e analyses <strong>of</strong> 850 diverse same sample powders performed over a 5 year period, 2004-2009
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