Adamsite-(Y)

{{infobox mineral

| name = Adamsite-(Y)

| image = File:Adamsite-(Y)-167345.jpg

| caption = Cluster of prismatic white crystals of adamsite from Canada

| imagesize = 200px

| formula = NaY(CO₃)₂·6H₂O

|IMAsymbol=Ads-Y{{Cite journal|last=Warr|first=L.N.|date=2021|title=IMA–CNMNC approved mineral symbols|journal=Mineralogical Magazine|volume=85|issue=3|pages=291–320|doi=10.1180/mgm.2021.43|bibcode=2021MinM...85..291W|s2cid=235729616|doi-access=free}}

| strunz = 5.CC.30

| system = Triclinic

| class = Pinacoidal ({{overline|1}})
(same H-M symbol)

| symmetry = P{{overline|1}}

| mohs = 3.0

}}

Adamsite-(Y) (previously IMA 1999-020), chemical formula NaY(CO₃)₂·6H₂O is a mineral of sodium, yttrium, carbon, oxygen, and hydrogen. It is named after Frank Dawson Adams (1859–1942), professor of geology, McGill University. Its Mohs scale rating is 3.