Strontium Metatungstate, SrW₄O₁₃

Strontium Metatungstate, SrW₄O₁₃.8H₂O, is prepared by saturating a hot solution of metatungstic acid with strontium carbonate. It crystallises in monoclinic prisms, with crystallographic data,

a:b:c = 1.0556:1:0.7999; β = 40° 21'.