How easy is it to damage a fossil? I've gathered some interesting possible partial fossils from a couple sites adjacent to a river, so of course there's mud to be removed. I was (I thought) using gentle methods that I don't think would cause damage, but perhaps they're incompletely fossilized (if fossils in the first place)?
I rinsed in the adjacent river 1st, dried with microfiber cloths. Later, noticed some changes in appearance...
Well, before cataloguing my sins, let's start off with what one should or should not do?
Thanks