IMA mineral species

Dacostaite

K(Mg₂Al)[Mg(H₂O)₆]₂(AsO₄)₂F₆·2H₂O

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

Properties

Chemical formulaK(Mg₂Al)[Mg(H₂O)₆]₂(AsO₄)₂F₆·2H₂O
ElementsK, Mg, Al, H, O, As, F
Crystal systemMonoclinic
Mohs hardness—
Density—
Streak—
Color—
IMA symbolDcs
Nickel–Strunz class8.DG.

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