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Pronunciation varies by accent · noun
(mineralogy) 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..
Shafts are now being sunk at Sirius Minerals' Woodsmith mine to extract polyhalite for use as an agricultural fertiliser, with much of the output exported.
Use polyhalite when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Polyhalite means (mineralogy) 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..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Shafts are now being sunk at Sirius Minerals' Woodsmith mine to extract polyhalite for use as an agricultural fertiliser, with much of the output exported.
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