If it's pure chalcopyrite, the shiny bit would be over 30% Cu....

If it's pure chalcopyrite, the shiny bit would be over 30% Cu. However, depending on the core diameter, what we're looking at is only 22-30cm long and only half of it is full of sulphides. That would give a 1m sample grading about 4-5% Cu. The million dollar question, though, is: how representative is that photo of the rest of the mineralisation? My guess is that it's the shiniest, specciest bit of core they could lay their hands on. Early days yet, but this one is starting to look interesting...

Not sure about the Inca Minerals thing - their share price chart over the last 6 months looks like your typical ASX junior's i.e. top left to bottom right.