Yes, in the episode it appears to be a fictional element, the way it is used. But it isn't that fictional as it seems. [1]Martinvb 12:23, January 16, 2010 (UTC)

Very interesting. I added it to the bginfo. Thanks for spotting that!
Cepstrum (talk) 12:36, December 26, 2010 (UTC)

Caps in name Edit

Basically just for future reference, in the final draft script of "Proving Ground", the name of this fictional mineral is consistently formatted "Archerite" (note: capital "A"). I strongly suggest (given the fictional nature of the mineral and all) that we continue to do likewise. --Defiant (talk) 09:12, February 5, 2016 (UTC)