Will zinc pennies melt in a campfire?

A couple weeks ago I had two pennies stuck together with gum or something. One was an '82 (probably copper) and the other was a zinc shield penny. I recovered the '82 from the fire with the burned gum still stuck on it. I easily chipped off, just as planned. I did not find the other penny, even after searching through all the ashes for a few minutes.
Did it melt or did I just lose it?
I have three more pairs of stuck-together pennies that I am considering burning...
Did it melt or did I just lose it?
I have three more pairs of stuck-together pennies that I am considering burning...