Unusual rocky material enthralling science graduate attending university (7)
I believe the answer is:
obscure
'unusual rocky material enthralling science graduate attending university' is the definition.
I can't tell whether this defines the answer.
'graduate attending university' is the wordplay.
I cannot quite understand how this works, but
'graduate' could be 'bsc' (someone with a Bachelor of Science degree) and 'bsc' is found within the answer.
'university' could be 'ou' and 'ou' is present in the leftover letters.
The remaining letters 're' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for obscure that I've seen before include "Not clear, hidden" , "Unknown or unclear" , "Indistinct; conceal" , "Cloudy or veiled" , "Gloomy" .)