The Trollenite is a Key Item in Xenoblade Chronicles 2. It is received from Misimisi during Precious Yearnings by having him appraise a Strange Mineral from a prospecting point on the Jelidorend Highlands in the Empire of Mor Ardain.
Upon appraisal, Misimisi responds with: "Meh-meh...This unmistakably Trollenite. Very strange mineral. For some reason every sample unearthed have shape of weird-looking humanoid giant. Not most beautiful of minerals, but quite valuable for unique quality."