Meyrowitzite
A calcium uranyl carbonate validated by the IMA in 2018, named for chemist Robert Meyrowitz.
Intro adapted from Wikipedia (CC BY-SA).
Meyrowitzite is an IMA-recognized mineral species in the carbonate class, with the chemical formula Ca(UO₂)(CO₃)₂·5H₂O.
It crystallizes in the monoclinic crystal system (space group P2_1/n).
Key properties: Mohs hardness 2; specific gravity 2.7; Very pale yellow streak; Vitreous luster; optically biaxial.
IMA symbol Mey, IMA status: approved, named in 2018.
On calcite-veined asphaltum as efflorescent crusts on the surfaces of mine walls in a sand-hosted uranium deposit of the Colorado Plateau type.
It is found associated with Gypsum, markeyite, rozenite.
The mineral was named to honor American analytical chemist Robert Meyrowitz (1916-2013), who at the U.S.