IMA mineral species

Downeyite

SeO₂

Selenium dioxide mineral.

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

Properties

Chemical formula	SeO₂
Elements	Se, O
Crystal system	Tetragonal
Mohs hardness	—
Density	4.138 g/cm³
Streak	—
Color	—
IMA symbol	Dny
Nickel–Strunz class	4.DE.05

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

Learn more

Downeyite on Mindat.org
Wikidata item Q3714796 (source of this page's data – you can correct it there)