Trurnit, P. Caldera of Neogene age and associated hydrothermal ore formation, Ticapampa-Aija mining district, Cordillera Negra, Department of Ancash, Peru - Berlin Springer-Verlag 1982 - pp. 528-552 Subjects--Topical Terms: ALTERACIÓN HIDROTERMALMINERALIZACIONYACIMIENTOS POLIMETÁLICOS Subjects--Geographic Terms: PERUAIJAANCASHTICAPAMPA Universal Decimal Class. No.: 553/A54|6