Bologna stone

variants: or Bolognan stone

Definition of Bologna stone

: the mineral barite when found in roundish masses composed of radiating fibers, being phosphorescent when calcined with charcoal

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History and Etymology for Bologna stone

Bologna or Bolognan entry 1; from its discovery near Bologna, Italy

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Cite this Entry

“Bologna stone.” Dictionary, Merriam-Webster, Accessed 22 Jan. 2021.

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