Crystopedia
IMA mineral species

Tachyhydrite

CaMg₂Cl₆·12H₂O

Deliquescent calcium and magnesium chloride mineral.

YellowWhite & Clear

Tachyhydrite specimen
Tachyhydrite.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formulaCaMg₂Cl₆·12H₂O
ElementsCa, Mg, Cl, H, O
Crystal systemTrigonal
Mohs hardness2
Density—
Streak—
Color—
IMA symbolThy
Nickel–Strunz class3.BB.35

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

🌍 Where it's found

Type locality (where it was first described): Staßfurt, Germany

  • 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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