Sweetite
Zinc hydroxide — a rare mineral of oxidized lead-zinc veins, named for British Museum curator Jessie Sweet.
Intro adapted from Wikipedia (CC BY-SA).
Sweetite is an IMA-recognized mineral species in the oxides & hydroxide class, with the chemical formula Zn(OH)₂.
It crystallizes in the tetragonal crystal system.
Key properties: specific gravity 3.33; optically uniaxial.
IMA symbol Sw, IMA status: approved, named in 1983.
Found in an oxidized vein in limestone.
It is found associated with Galena, ashoverite, wülfingite, anglesite, cerussite, hydrocerussite, litharge, fluorite, palygorskite, calcite.
The mineral was named to honor Jessie May Sweet (1901–1979), Curator of the mineral collections of the British Museum (Natural History), London, England.