IMA mineral species

Gerstleyite

Na₂(Sb,As)₈S₁₃·2H₂O

Sulfosalt mineral.

Gerstleyite specimen
Gerstleyite-rare08-2-93a.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formulaNa₂(Sb,As)₈S₁₃·2H₂O
ElementsNa, Sb, As, S, H, O
Crystal systemMonoclinic
Mohs hardness—
Density—
Streak—
Color—
IMA symbolGst
Nickel–Strunz class2.HE.05

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

🌍 Where it's found

Type locality (where it was first described): Pacific Coast Borax Company, United States