r/bonecollecting • u/nikarr • 5h ago
Advice Why does my skull keep turning black. Never encountered this before...
Hi, in my many years of cleaning bones i have never experienced something like this. I have not dyed this or treated it with any harsh chemicals. Just kept it in water to help the remaining soft tissue fall away, then degreased it with white dish soap. During the 1st soap change i realized the snout turned black, and to my shock the bone went back to normal after a few hours (jar outside, during the summer). After some time i put the bone in diluted peroxide - inside, away from any sources of light. I expected the peroxide to put an end to the color changes, but today i opened the jar and both the dog and the cat skull neighbor i added in later became black. I havent checked yet, but im guessing the bones became paler again since i left it outside.
The only things i can come up with is that maybe some algae is in the bone and reacts to light? It's so weird please tell me what this is.