Celestite (SrSO4) is a mineral consisting of strontium sulfate. It is named for its occasional delicate blue color.
It occurs crystallized, also in compact massive and fibrous forms.
... V) from 1519-1558; he was also King of Spain from 1516-1556 -- officially as Charles I of Spain, although often referred to as Charles V ("Carlos Quinto" or "Carlos V") in ...