Could be a tektite...maybe two molten balls of impact material have contacted with each other before they landed back on the ground? Do you know if it was found in an impact area, although some impacts can throw material a couple of hundred kilometres.
You could perhaps send an email and couple of pictures to Norbert Kammel at:
meteorites@rocksonfire.com
They are a local meteorite distributor in Melbourne and may offer a good educated opinion.