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It's a nice concept and the music brings a great feeling to contemplate the open space but I can't really understand if I'm mining the crystals correctly or not. 

(+1)

Under "sample" on the ship's log, there will be a green square (or crystal in case of the silarite) if you have used the drill correctly. You can collect one sample for each object kind. I will look into making it more clear to the player. Thanks for the feedback!