Definitions

from The Century Dictionary.

  • A mineral or salt occurring in masses of a fibrous structure, of a brick-red color, being tinged with iron.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Min.) 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.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • 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.

Etymologies

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Examples

  • That boom has the blessing of the national government, whose regional growth fund awarded Cleveland Potash a £15-million $23.4-million grant to build a polyhalite processing facility in the Tees Valley.

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  • Weeks later, however, the company said that the first drilling work had found a seam of polyhalite that was four times thicker than expected.

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  • It is targeting the deep layer of polyhalite - a material that can be processed in potash fertilizer - that Sirius also plans to extract.

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  • The potassium salts like carnallite, langbeinite, polyhalite, and sylvite are found in ancient lake and sea beds.

    CreationWiki - Recent changes [en]

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