mc5 - Riddle-me-ree Crescent

My fourth's in the ALPHABET somewhere, of course!

My fifth's in A MINUTE but not in AN HOUR

My sixth is in BLOOM and is also in FLOWER

My seventh's in ARKEN but but missing from SWALE

My eighth's not in HILL but can be seen in DALE

My first half is wealthy, my second's a hill

On second thoughts:
My first half is wealthy, my second's a rise
And the gardens thereat are a sight for sore eyes.

I think it's Richmond - is that right?

My first can be WRITTEN but cannot be DRAWN

My second's in SUNSET but never at DAWN

My third is in PIRATE but not JOHNNY DEPP

My fourth's in a MAINSAIL but not in a STEP

My fith is in HAMMER but not on the NAIL

My sixth's not in DOLDRUMS but found in a GALE

Has our rhyme gone astray, or is it just me?

My seventh in MOUNTAINS and MOLEHILLS is found [Kim] Astray how? It makes sense to me so far...

My eighth, of course, is in the UNDERGROUND

My ninth's nicely ROUNDED not thin like a STICK

My tenth's in ADOBE but not in a BRICK

My elevenses have RICH TEA but nary a HOB NOB