Across
Book was wrong about current state of some trees (7)
Information is inspiring French art creation (7)
It's black and pink, lacking resistance (4)
Dash back before crossing forbidden Silk Road for one (5,5)
Zinc or rocky mineral in crystal form (6)
British-American sign said: "Coach Line" (3,5)
Building material makes smoother sound (9)
Quarryman's key picked up (5)
Practicable round safety device (2,3)
A paper nobody backs maintains run for some time (9)
Bismuth has to turn red, perhaps piebald (8)
Tell bishop, not priest (6)
Don't read enough to be a locum? (10)
Unknown mineral long ago (4)
Send for treatment here, after he falls off bike (7)
Contestant receives surgery for disorder (7)
Down
Bizarre objects, each full of toxic compound (7)
Corporal remains Roman Catholic priest at heart (5)
Former Tory leader in court is dead and gone (7)
Stevenson's written about still (4,2)
In Brussels, book into sprawling development (9)
Gatecrash lewd independent theatre first (7)
Period yielding 10 addled brain? Of course! (13)
Find nightclub dead (9)
Dodgy dealer rings excellent pottery (7)
Peer that follows just after the start (5,2)
Rock formation exposed by harvest (7)
Ancient 3 fellow East German left (6)
Liberal philosopher's bed (5)
Type letters or click words in the clue