Ballardite. Hmmm. Sounds like a mineral. If it were, it would probably be one that easily disentegrated under pressure or excessive prodding. Yeah, proabably pretty friable stuff. It's probably the kind of mineral that finds the atmosphere of Pub Clubs too caustic to be exposed to unless adequately galvanized with a protective coating of zinc or Vitamin-C.
I wish I could join you tomorrow night, but, woe is me, I have to pick my parents up from the airport at that time. Or, I could just make them wait...