The other thing that happenned with Diamond Fields was that it created many 'area plays' that also had some fast and furious runups in price as they were seen as the 'next Diamond Fields" - a few that I can remember as Anvil, Fleck and Donner.
If ZEN were have a quick and expensive buyout, investors that missed the boat would probably pile into the other graphite plays not even realizing each of those is kind of missing the unique deposit idea.