Real World article
(written from a Production point of view)

According to a line cut from the Star Trek: The Next Generation episode "Encounter at Farpoint", duraglass and tritanium were used in the construction of Federation space stations.

A spaceborne entity imprisoned by the Bandi duplicated the atomic structure of this material for Farpoint Station. The presence of this modern material in close proximity to the less advanced Old Bandi City aroused the suspicion of Starfleet who requested a closer examination of the station. [1]