Economic Geology; January 2005; v. 100; no. 1;
p. 43-61; DOI: 10.2113/100.1.0043
© Society of Economic Geologists
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FIG. 20. Temporal evolution of palladium mineralization at the southern Roby
and Twilight zones, Lac des Iles mine. The concentrations of MgO (wt %) and Pd
(ppb) are shown by box-whisker plots where a box is defined by the 1st
and 3rd quartile values. The total ranges of values are shown as
lines and the median values of rock types are connected by the thick line. Note
the increased MgO and Pd concentrations associated with the sulfide-bearing
melanocratic rocks. The numbers on the left side of the diagram correspond to
the rock types: 1a = leucogabbro and/or anorthosite, 1b = varitextured gabbro,
1c = medium-grained light gray gabbro, 1d = medium-grained gabbro, 2a = matrix
of melanogabbro breccia, 2b = clinopyroxenite, 2c = dark gabbro, 3a = late
clinopyroxenite, and 3b = late gabbro.
Copyright © 2008 by Society of Economic Geologists
