Thyrikite
From Warhammer 40k - Lexicanum
Thyrikite is a rare mineral that is only formed within the Galactic Core's Thykus Cluster.[1]
It is mined by the Leagues of Votann, but doing so is dangerous for the species. Not only must they contend with the Cluster's gravitic tsunamis, but also the abhorrent Skorvexi who dwell there. The Leagues continue to do so, however, as Thyrikite serves as both a perfect insulator and phenomenally resilient, lightweight armour alloy. Only once, though, has the species been able to harvest enough Thyrikite to fashion an entire suit of Void Armour.[1]
Sources
- 1: Codex: Leagues of Votann (9th Edition), pg. 67