[2] The name is given after a curator of mineral department of the British Museum, Jessie May Sweet (1901–1979).
[6] It occurs in an oxidized vein in limestone bedrock with galena, ashoverite, wülfingite, anglesite, cerussite, hydrocerussite, litharge, fluorite, palygorskite and calcite.
Some crystals show evidence of a basal plane and a few are tabular.
[9] The birefringence means the decomposition of light into two rays when passing through a mineral.
[2] Sweetite is mostly found from a limestone quarry 200–300 m northwest of Milltown, near Ashover, Derbyshire, England.