Antozonite

Antozonite is a dark, radioactive variety of fluorite that releases a pungent odor when broken. Its odor has been associated with trapped elemental fluorine and ozone.

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Radiation damage: Radiation damage is the alteration of a material's structure by energetic particles or radiation. Radioactive impurities in antozonite can create defects that trap reactive species.
Calcium fluoride: Calcium fluoride is the ionic compound CaF₂ and the principal chemical constituent of fluorite. It is the chemical substance making up the antozonite host mineral.
Georgius Agricola: Georgius Agricola was a sixteenth-century German scholar whose works helped establish systematic mineralogy and mining studies. His mineralogical writing is associated with early descriptions of odoriferous fluorite.
Mineral collecting: Mineral collecting is the acquisition and study of mineral specimens for scientific, educational, or personal purposes. Antozonite's dark appearance and odor make it a distinctive fluorite specimen.
Radiolysis: Radiolysis is the chemical decomposition of matter caused by ionizing radiation. Radiolysis offers a mechanism for generating reactive products within antozonite.
Color centers: Color centers are crystal defects that absorb visible light and give minerals or solids distinctive colors. Radiation-induced defects contribute to the dark coloration of antozonite.
Crystal lattice: A crystal lattice is the repeating three-dimensional arrangement of atoms or ions in a crystalline solid. The fluorite lattice can hold defects and trapped products of radiation damage.
Fluorite mining: Fluorite mining is the extraction of calcium fluoride for industrial and mineral-collecting uses. Antozonite has been encountered as an unusual material within fluorite deposits.
Radiation dosimetry: Radiation dosimetry is the measurement or calculation of ionizing radiation absorbed by matter. Antozonite illustrates how natural radiation can leave persistent changes in a mineral.
Trapped charge: Trapped charge is electrical charge immobilized at defects or impurities in a solid. Defect-bound charges may participate in radiation-driven chemistry before fracture releases gases.