Ga3AlN4 is Lavarevi\'{c}ite structured and crystallizes in the cubic P-43m space group. Ga(1) is bonded to four equivalent N(1) atoms to form GaN4 tetrahedra that share corners with four equivalent Al(1)N4 tetrahedra and corners with eight equivalent Ga(1)N4 tetrahedra. Al(1) is bonded to four equivalent N(1) atoms to form AlN4 tetrahedra that share corners with twelve equivalent Ga(1)N4 tetrahedra. N(1) is bonded to three equivalent Ga(1) and one Al(1) atom to form corner-sharing NAlGa3 tetrahedra.
Ga3AlN4 is Lavarevi\'{c}ite structured and crystallizes in the cubic P-43m space group. Ga(1) is bonded to four equivalent N(1) atoms to form GaN4 tetrahedra that share corners with four equivalent Al(1)N4 tetrahedra and corners with eight equivalent Ga(1)N4 tetrahedra. All Ga(1)-N(1) bond lengths are 1.95 Å. Al(1) is bonded to four equivalent N(1) atoms to form AlN4 tetrahedra that share corners with twelve equivalent Ga(1)N4 tetrahedra. All Al(1)-N(1) bond lengths are 1.89 Å. N(1) is bonded to three equivalent Ga(1) and one Al(1) atom to form corner-sharing NAlGa3 tetrahedra.