Avicennite

Avicennite
General
CategoryMinerals
FormulaTl2O3
Strunz classification4.CB.10
Dana classification04.03.08.01
Crystal systemCubic
Crystal classDiploidal (m3)
H-M symbol: (2/m 3)
Space groupIa3
Identification
ColorGrayish black with brownish black tint
Mohs scale hardness2
Density8.9

Avicennite (thallium(III) oxide) is an oxide mineral. It was discovered around the Dzhuzumli village, Samarqand, Uzbekistan. It is named after Avicenna, a Persian doctor and polymath.