agreedgold is good.economics for a producer come down to grade...

agreed
gold is good.
economics for a producer come down to grade (recovered) and mining cost per tonne.
ayampampa, grade looks ok so far.
black shale units are a good reductant.
the gold within these units is generally not disseminated uniformly, however.
the quartz veins and assoc. (dilatant structures)
as in vic., need to be close.
"black shale units that show little visible evidence of shearing or sulphides"
of course they don't,(depending on drill sample coincidence), the structure carrying the gold passes through the units, and high grade gold may be preferentially precipitated in these units, due to chemical contrasts, but will still be close to the structure that brought it there. the pertinent structure/s need to be targeted, not just stratigraphic units, which are usually far more voluminous.