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clock Created with Sketch. 01/04/18
09:58
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Originally posted by Cu5FeS4
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The Au is largely concentrated in a black shale unit that is hosted by quartz porphyry. Figure 5 shows the geological map with spatially limited quartz porphyry evident. The thickest zone of the quartz porphyry - and assuming therefore the thickest shale occurrence - is coincident with the known Au prospects that outcrop along <100m strike. There doesn't appear to be much potential extension to the host unit so unless there is a second, larger mineralised structure that does not rely on the shale-porphyry sequence as a host then the resource potential is not large. Back of the envelope calculations could could see it anywhere between 50-250koz, but I would lean more to the lower half of that estimate.
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I think the 50m scale provided in figure 5 might possibly be an error. It doesnt seem to match up with the location of pits/finds in figure 6, and press releases stating that emu is 4km north of the existing pits. May be worth clarifying.
