title: Chevkinite-(Се) and Perrierite-(Се) from the Island Arc Quartz Gabbronorite–Dolerite of the Ayu-Dag Intrusion, Crimean Mountains
abstract: Chevkinite-(Се) and perrierite-(Се), which are characteristic minerals of alkaline igneous rocks and high-temperature alkaline alterations, are typical accessory minerals in the Mesozoic island-arc gabbros of the Crimean Mountains. The early magmatic mineral assemblages from these low-alkali gabbros of the Ayu-Dag intrusion contain accessory Ti–Zr–LREE minerals depleted in SiO2: chevkinite-(Се), perrierite-(Се), zirconolite, and baddeleyite. Chevkinite and perrierite occur as isolated short pris
journal: Geology of Ore Deposits