e/Tutton's salt

Information
has gloss	eng: Tuttons salts are a family of salts with the formula M2M(SO4)2.(H2O)6 (sulfates) or M2M(SeO4)2.(H2O)6 (selenates). These materials are "double salts," which means that they contain two different cations, M+ and M2+. Some examples of Tutton salts are salts containing M = NH4+ and M = V2+ and Cu2+. , as well as the well-known Mohrs salt, ferrous ammonium sulfate ((NH4)2Fe(SO4)2.(H2O)6). They are sometimes called Schonites after the naturally occurring mineral Schönite (K2Mg(SO4)2.(H2O)6). They are named for A.E H Tutton who identified and characterised a large range of these salts around 1900. Related to the Tuttons salts are the alums, which are also double salts but with the formula MM(SO4)2.(H2O)12. The Tutton's salts were once termed "false alums" . Such salts were of historical importance because they were obtainable in high purity and served as reliable reagents and spectroscopic standards.
lexicalization	eng: Tutton's salt
instance of	(noun) a salt or ester of sulphuric acid sulfate, sulphate

Meaning
Russian
has gloss	rus: Соли Тутто́на (шени́ты) — двойные комплексные соли общей формулы M2I MII (SO4)2·6H2O.
lexicalization	rus: Соли Туттона