Читать книгу Monument Future - Siegfried Siegesmund - Страница 39

Nodular carbonate rock with ammonite shells (limestone, biomicrite). Colour: dark red with white veins and pink shades. Minerals: calcite, haematite. Decay morphologies: surface erosion, sulphate skin formation, chromatic alteration. Geology: “Calcare ammonitifero” formation (lower Lias) of the non-metamorphic series of Tuscany. Quarry: south of Roccalbegna (Grosseto province). Use: polished slabs mainly for flooring in residential and public buildings (Casa Wassermann, a four-storeys urban residence with an accurate choice of coloured stones for flooring, P. Portaluppi 1934, Milan).