IMA mineral species

Theophrastite

Ni(OH)₂

Hydroxide mineral.

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

Properties

Chemical formulaNi(OH)₂
ElementsNi, O, H
Crystal systemTrigonal
Mohs hardness—
Density—
Streak—
Color—
IMA symbolTph
Nickel–Strunz class4.FE.05

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