White crystal aggregates of the rare silicate mineral chantalite from the type locality in Turkey (Covur Yokusutepe Hill, Doganbaba, Yeşilova District , Burdur Province, Turkey). Ex Vandenbroucke Museum collection from Waregem, Belgium. — Photo: David Hospital · CC BY-SA 4.0
Chantalite
Chantalite is an IMA-recognized mineral species in the silicate class, with the chemical formula CaAl₂(SiO₄)(OH)₄.
It crystallizes in the tetragonal crystal system (space group I4_1/a).
Key properties: specific gravity 2.8–2.9; Vitreous luster; optically uniaxial.
IMA symbol Cht, IMA status: approved, named in 1977.
Found in rodingite dikes in an ophiolite.
It is found associated with Vuagnatite, prehnite, hydrogrossular, chlorite, calcite.
The name refers to Chantal Sarp, wife of the mineral's discoverer.