(goes to look up the definition, maybe organelles doesn't mean what I think)..
organelle |ˌôrgəˈnel|
nounBiology
any of a number of organized or specialized structures within a living cell.
... with no cellular membrane, how can you have cells?
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Back in my day, copiers were made of clay patterns that duplicated without any specialized support systems.
(Does that count as "rocks" yet?)
(Apparently, and this is from memory, clay can have imperfections / fracture lines, and they will replicate duplicate patterns as the clay lays down more sediment.)