Everything in minecraft its infinite.
A few Arguments against that:
Only 3 Strongholds (maximum), so FINITE Moss/Crackbricks and FINITE Endportals
Only 1 Enderdragon, so FINITE Enderdragoneggs
Only 1 Island in the End (never found a second), so FINITE Endstone
Only an Area, which is quadruple as large as the Earth, so FINITE (but a pretty large amount) everything, what is nonrenewable.
I just wanted to be a bit more exact, did i forgot something?