In order to get some more ideas on how lava and crystals move in real life i created a playlist of references that can be found here. Crystals grow a lot smoother than i thought they would which may be problematic when it comes to animating it moving whereas seeing how lava moves makes me feel more confident about animating it since there is such a wide variety of ways it can move and it'd be simple just to make it run off a skeleton.
My next plan is for me to film myself walking in different ways in order to decide how the golem will hold himself as he moves.