Читать книгу Monument Future - Siegfried Siegesmund - Страница 32

The commercial name refers to a wrong petrographic classification: this is a igneous coarse grained rock (amphibole gabbro). Colour: black with some light grey spots. Minerals: plagioclase, hornblende. Decay morphologies: scaling. Geology: “Dioritico – kinzigitica” forma-tion of the “Ivrea-Verbano Zone”. Quarry: near the village of Anzola (val d’Ossola, Verbano province). Use: squared blocks and slabs (Banca Popolare, framework of openings, G. Greppi 1931, Milan); another use was for funerary purposes (Mausoleo Cadorna, M. Piacentini 1932, Pallanza; Cemeteries, Milan).

A stone, of the same colour but unlike origin (migmatite, Gneiss Valcondria), was quarried in val Chiavenna (Sondrio) and used in buildings.