Bologna, Italy/bologna100samples
Previous | Home | NextSamples of "fosforo di Bologna" found by the authors at Monte Paderno. The shards were of variable density, depending upon the respective concentrations of calcium or barium sulfates. In original accounts, the “Bologna stone” could be observed in three sites: “Monte Padernò, Roncaria, and Pradalbino.” Gian Luigi Felice and other geologists of Bologna University were well aware of the first two sites (Monte Paderno and Roncrio) but had never heard of the third site, the exact location of which shall probably never be known.
