Crystopedia
IMA mineral species

Polyhalite

K₂Ca₂Mg(SO₄)₄·2H₂O

Sulfate mineral.

RedPinkGrayWhite & Clear

Polyhalite specimen
Polyhalite-784531.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formulaK₂Ca₂Mg(SO₄)₄·2H₂O
ElementsK, Ca, Mg, S, O, H
Crystal systemTriclinic
Mohs hardness3.5
Density—
Streakwhite
Color—
IMA symbolPlhl
Nickel–Strunz class7.CC.65

“—” means no reliable value in Wikidata yet. Check Mindat for full data.

🌍 Where it's found

Type locality (where it was first described): Ischler Salzberg, Austria

  • Type locality
  • Notable source / deposit
  • Country of origin

Marker positions are approximate (region or locality level). Type localities from Wikidata; notable sources curated by Crystopedia.

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