We do not currently know of any synonyms for polyhalite.
The noun polyhalite is defined as:
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.
New Story Writing Game!
Win Amazon gift cards by writing simple stories at Fictish,
a new story writing game backed by WordHippo.