Alchemy was eventually collected alongside other Aliens comics in Aliens Omnibus: Volume 5 in October 2008.
In the Aliens comics line, Aliens: Alchemy was preceded by Aliens: Purge (August 1997), was published concurrently with the two-part film-adaptation Alien Resurrection (October-November 1997), and was followed by the miniseries Aliens: Kidnapped (December 1997-February 2008).
Official description of individual issues:Toch's a second-generation survivor, born of a transport crew that crash-landed on a deserted, backwater planet. He may have discovered a means of getting off the mudball, but he's also discovered another impediment -- the deadly cargo the ship was carrying!
It's the end of the world and the almighty First Father hath sent a plague of Aliens. Give your faith to him or face an eternity of damnation.
The end of the world is at hand, and an eternity of damnation awaits. But two siblings, Toch and Rachel, aren't buying into all the death and destruction. They have a hunch that salvation rests within the haunted transport ship that brought their ancestors to the planet hundreds of years ago. But there might be an Alien or two along the way!