Читать книгу Monument Future - Siegfried Siegesmund - Страница 33

Igneous rock (rhyolitic ignimbrite). Colour: purple to dark red showing clear phenocrysts and some elliptic coarse-grained patches. Minerals: quartz and 43plagioclase. Decay morphologies: scaling. Geology: “Vulcaniti di Auccia” forma-tion (lower Permian). Quarry: near the pass of “Croce Domini” (Bienno, val Camonica – val Trompia, Brescia province). Use: thick slabs for cladding or slabs for flooring (Palazzo delle Colonne, polished thick slabs deeply carved by Giacomo Manzù to represent the “coats of arms” of the Lombard provinces).