Environment: Late-stage, low-temperature hydrothermal phase within cavities in an alkaline pegmatite dike.
Locality: Poudrette quarry, Mont Saint-Hilaire, Quebec. Link to MinDat.org Location Data.
Color: Colorless, White, Pale pink, Pale purple.
note: Specific Gravity of Adamsite-(Y) =2.18 gm/cc.
U=PEAdamsite-(Y) x relectron= 189.50 barns/cc.
Adamsite-(Y) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.