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banded jigsaw textures, was observed in 193 samples, and lattice bladed calcite + lattice

bladed calcite replaced by quartz + acicular calcite replaced by quartz was observed in

120 samples. Fluid inclusion assemblages containing coexisting liquid-rich and vapor-

rich fluid inclusions were observed in 193 samples (Fig. 9).

For each of the textures described above, the average Au and Ag grade of samples

in which the feature is present, and the average Au and Ag grade for samples in which

that feature is absent, have been calculated and the results are shown on Figures 10 and

11. The average grade of Au is higher in samples in which the boiling feature is present,

compared to samples for which it is absent, except for the cockade texture silica (Fig. 10).

Also, the most dramatic difference in grade between the presence or absence of that

feature is colloform texture (1.1 ppm Au versus 0.2 ppm Au). And, the average grade is

lower in samples that exhibit non-boiling textures, including massive, zonaland comb

texture quartz and rhombic calcite.

The average grade of silver is higher in samples in which a feature indicative of

boiling is present for all features except for the jigsaw texture quartz. The average Ag

grade is lower in samples that show mineral textures that are indicative of slow crystal

growth (non-boiling), including massive, zonal, cockade and comb texture quartz – the

lone exception is rhombic calcite, which is not thought to be associated with boiling.

Features that show the most dramatic difference in Ag grade between the presence or

absence of that feature are colloform texture silica (178.8 ppm Ag versus 17.2 ppm Ag)

and bladed/platy calcite (128.4 ppm Ag versus 47.5 ppm Ag).

There is no significant difference in average grade of samples containing both

liquid-rich and vapor-rich fluid inclusions, compared to those in which fluid inclusion

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