My guess is the latter.
[[User:Xandaros|Xandaros]] ([[User talk:Xandaros|talk]]) 18:01, 22 June 2013 (CEST)
According to [[Player:Seara]], you are supposed to be able to analyse all rock types. So it is most likely a bug. [[User:Xandaros|Xandaros]] ([[User talk:Xandaros|talk]])