IMA mineral species

Arsenic (native)

As

Mineral (as opposed to the chemical element).

Arsenic (native) specimen
Arsenic-4jg33a.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formulaAs
ElementsAs
Crystal systemTrigonal
Mohs hardness3.5
Density5.68 g/cm³
Streak—
Color—
IMA symbolAs
Nickel–Strunz class1.CA.05

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