IMA mineral species

Gibbsite

Al(OH)₃

Form of aluminium hydroxide, mineral.

Gibbsite specimen
Gibbsite-fiu09b.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formulaAl(OH)₃
ElementsAl, O, H
Crystal systemMonoclinic
Mohs hardness—
Density—
Streak—
Color—
IMA symbolGbs
Nickel–Strunz class4.FE.10

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