Metal I note, dull, found around uranium (6)
I believe the answer is:
indium
'metal' is the definition.
(indium is a kind of metal)
'i note dull found around uranium' is the wordplay.
'i note' becomes 'in' (this might be a standard abbreviation I've not previously seen).
'dull' becomes 'dim' (synonyms).
'found around' is an insertion indicator.
'uranium' becomes 'U' (U is the chemical symbol for uranium).
'dim' going around 'u' is 'dium'.
'in'+'dium'='INDIUM'
Can you help me to learn more?
(Other definitions for indium that I've seen before include "Metallic element, In" , "Silvery-white metal" .)