*"You are unable to work out how to analyse the shard." - You are below prospecting skill level 20.
*"It looks like someone has tampered with the rock shards and therefore you decide not to analyse it." - The shard has already been analysed and is unable to be analysed again. Also appears if part of the shards have been used to make something or used in improving.
*"The rock shards looks too old for a decent analysis and therefore you decide not to analyse it." - Appears if you try to analyse a shard from a [[bulk storage bin]]. (Also may be given if the shard really is too old?)