Table 1. Selected assays for rock samples, sorted by Au g/t, noting anomalous Ag g/t, base metals and pathfinder trace elements.
The current suite of samples was comprised of kaolinite, dickite, alunite, pyrophyllite, montmorillonite, saponite-nontronite, opaline silica and jarosite in variable proportions. Zeolite speciation to define temperature ranges was not confirmed. Samples collected from the northern area of the ridge as noted in Figure 4 also displayed intense replacement by zeolite, kaolinite, alunite, montmorillonite, opaline silica and muscovite though contained the bulk of the anomalous gold and silver values. Ubiquitous hematite with lesser jarosite and secondary oxyhydroxides was identified on steep vertical exposures (Figure 4) and in quartz vein assemblages.