What is the chemical formula of Gibbsite? Share with your friends Share 0 Aarthi Arts answered this the chemical form of gibbsite is Al(OH)3 i.e aluminium hydroxide. please like if it helped you.😀 2 View Full Answer Srija Dey answered this The Chemical formula of Gibbsite is:- Al(OH)3 1 Ayush answered this Al(OH) 3 it is form of aluminium hydroxide 0 shwetabhatia answered this Al(OH)3. it is also known as Aluminium Hydroixde 0