The Collaborative International Dictionary of English v.0.48:

Glauberite \Glau"ber*ite\, n. [From Glauber, a German chemist,
   died 1668: cf. F. glaub['e]rite, G. glauberit.] (Min.)
   A mineral, consisting of the sulphates of soda and lime.
   Glauber's salt