nagatelite

\\ˌnagəˈteˌlīt\ noun (-s)

Etymology: Nagatejima, headland on the Noto peninsula, Japan + English -lite

: a rare mineral Ca₂(Ce,La)₂Al₄Fe₂(Si,P)₆O₂₅(OH)(?) that consists of phosphosilicate of aluminum, the rare earths, calcium, and iron, that is related to clinozoisite, and that occurs in black tabular masses