Fig. 3From: Mapping of stones and their deterioration forms: the Clock Tower, Venice (Italy)Sampling points (red arrows), stereomicroscope photos, and transmitted polarized-light microscope microphotographs (crossed-polarised light) of: sample 2E, Carrara marble (a–c); sample 9W, Proconnesian marble (d–f); sample 5E, Istrian stone (g–i); sample 2N, Ammonitico Rosso from Verona (j–l); sample 1N, Scaglia Rossa (m–o)Back to article page