subordinate chalcopyrite, page-3

In the release the description of the rock referred to three minerals from memory-pyrite (=iron sulphide), chalcopyrite (=copper iron sulphide), and chalcocite(=copper sulphide, no iron).

Subordinate means there was some copper present-probably not enough to write home about, but a little bit encouraging. (Better than finding none!)

Cheers,TAS