Armalcolite-Bearing Island Arc Plagiolherzolites and Olivine Gabbro–Norite–Dolerites of the Balaklava Area (Crimea)
Journal: Moscow University Geology Bulletin
Year: 2019

Armalcolite (Mg,Fe)Ti2O5 is a characteristic mineral of lunar titaniferous basalts that occurs widely in island-arc low-alkaline plagiolherzolites and olivine gabbro–norite–dolerites of the Early Bajocian Pervomaiskoe–Ayu-Dag complex of mesozoids in Crimea, especially in Balaklava sea cliffs near Sevastopol. Cumulose Mg-olivine contains inclusions of chromium spinels. Chromium spinels I are moderately chromic and ferruginous (f = 45–55) containing 8–14 and up to 1.2 wt % of Fe2O3 and TiO2, respe