IMA mineral species

Luddenite

Unclassified silicate.

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

Properties

Chemical formula—
Elements—
Crystal systemMonoclinic
Mohs hardness—
Density—
Streak—
Color—
IMA symbolLdd
Nickel–Strunz class9.HH.10

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