Canine and ovine tie around tungsten source (10)
I believe the answer is:
wolframite
'tungsten source' is the definition.
The definition suggests a singular noun which matches the answer.
'canine and ovine tie' is the wordplay.
I cannot quite see how this works, but
'canine' could be 'wolf' (wolf is a kind of canine) and 'wolf' is found in the answer.
an anagram of 'tie' is 'ite' which is located in the answer.
The remaining letters 'ram' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'around' is the link.
Can you help me to learn more?
(Another definition for wolframite that I've seen is " compound".)