When I dig for ore there are many blocks that don't get "uncovered". Mostly because who has that many mining tools, really.
So, now that I built the Central Museum it's cool that during the quest for ore the occasional artifact will appear. Yeah!
My question is... let's say that one of those "un-highlighted" blocks that I chose to pass by contains an artifact that I am totally unaware of.
Doesn't seem quite fair that should be the only time it shows up.
Does it "cycle" back later? Or is it 'if I miss it I'm screwed'?