IMA mineral species

Hydrohalite

NaCl·2H₂O

Halide mineral.

Hydrohalite specimen — Microphotographs of aqueous fluid inclusions (cropped).png · Wikimedia Commons (see file page for author & license)

Properties

🔷 Monoclinic

Chemical formula	NaCl·2H₂O
Elements	Na, Cl, H, O
Crystal system	Monoclinic
Mohs hardness	—
Density	—
Streak	—
Color	—
IMA symbol	Hhl
Nickel–Strunz class	3.BA.05

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

🌍 Where it's found

Type locality (where it was first described): Bad Dürrnberg, 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.

Learn more

Hydrohalite on Mindat.org
Wikipedia article
Wikidata item Q3787806 (source of this page's data – you can correct it there)