The phosphorescence of the material made by Casciarolus made it a curiosity and various alchemists and chemists made experiments with the material which was known as " Lapis Boloniensis ", " Chrysolapis " or " bologna stone ".
2.
Andreas Sigismund Marggraf showed that calcite and gypsum were not very suitable for the production of the " bologna stone ", but a special heavy fluorspar, in the end he concluded that calcium sulfate is the material from which the " bologna stone " is made.
3.
Andreas Sigismund Marggraf showed that calcite and gypsum were not very suitable for the production of the " bologna stone ", but a special heavy fluorspar, in the end he concluded that calcium sulfate is the material from which the " bologna stone " is made.
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