It would seem that the more familiar ibid. could be used instead of the more intricate loc. cit. in such a case.
For example if we have:
11. Stern, op. cit., p. 58.
and the subsequent citation is to also refer to Stern, p. 58 (precisely what loc. cit. is for), can it then be economically rendered as:
12. Ibid.
or should loc. cit. be used? It seems ibid. has generally supplanted loc. cit. for use in such instances.