Thanks, Joyciee.
Perks up about unionist joy accepting bit of igneous rock from Germany (12)
Rock from Germany is the definition. It's a very odd-looking word, which I got only from working through Chambers!
There's an anagram of 'perks' involved, and the usual 'unionist'. 'Bit of igneous' is just one letter, and that's put inside a five-letter word for 'joy'. That covers all the letters in the entry, but two Fs are needed for the actual answer.