https://wiki.fysik.dtu.dk/ase/ase/build/build.html#ase.build.bulk - currently using cubic, when I could be using 'not specified' or orthorhombic
https://wiki.fysik.dtu.dk/ase/ase/build/build.html#ase.build.bulk - currently using cubic, when I could be using 'not specified' or orthorhombic