People who believe in this substance, and then realise later that it does not exist, will deny ever believing in Meteorite Sulfate and claim it was a hypothesis.
Jono: Meteorite Sulfate does exist!!
Jake: No, it doesn't.
Jono: Yes it does, I'll even tell you what it is...
Jake: Tell me then.
After discovering it does not exist:
Jono: I HYPOTHESISED!!!