Polyhalite
Pronunciation : Pol`y*ha"lite
Part of Speech : n.
Etymology : [Poly- + Gr. (Min.)
Definition : Defn: A mineral usually occurring in fibrous masses, of a brick-red color, being tinged with iron, and consisting chiefly of the sulphates of lime, magnesia, and soda.
Source : Webster's Unabridged Dictionary, 1913