YEAHZ!! ! I've been looking for a list like that for almost a decade! Thanks a million, buddy! That's my brand exactly!
The measly list I've been able to put together looks like this:
* The Orb - Cydonia (if you count that as dark, since it's certainly not black, but have so many strange sounds it's definitely a bit eerie).
* Plastikman - both their albums (last I checked there were two, at least)
* The Great Beast Speaks CD2. The first one contains Crowley's ritualistic stonecake rants, but the other side has only sounds of rattling chains, whispering voices, other metallic, raspy sounds etc.