Topaline

Topaline is a rare mineral which is used in life support systems, and has been known to disrupt sensors.

In the 23rd century, topaline was a highly-prized mineral by the Klingon Empire and the acquisition of the mineral led to several tense engagements with the United Federation of Planets, including Capella IV. (TOS episode: "Friday's Child"; novel: First Strike)

In 2355, the planets and moons of the Maxia Zeta star system were discovered be richly endowed with many minerals including dilithium. (TNG novel: The Buried Age)