Mineral Factbook

Tellurobismuthite

Bi2Te3IMA symbol: Tbigrandfathered

Tellurobismuthite is a sulfide or sulfosalt mineral with the formula Bi2Te3, crystallizing in the trigonal system. It has a calculated density of 7.834 g/cm3.

Photos

Tellurobismuthite specimen photo
Pacific Museum of Earth from Canada · CC BY-SA 2.0 · Commons
Tellurobismuthite specimen photo
Pacific Museum of Earth from Canada · CC BY-SA 2.0 · Commons
Tellurobismuthite specimen photo
Pacific Museum of Earth from Canada · CC BY-SA 2.0 · Commons
Tellurobismuthite specimen photo
Jyrki Autio · Public domain · Commons

Crystallography

Crystal systemtrigonal crystal systemWikidata (CC0)
Space groupR -3 m :H
Cell (Å, °)a = 4.395, b = 4.395, c = 30.44; α = 90, β = 90, γ = 120
Cell volume509.205 ų, Z = 3
Axial ratios1.0000:1:6.9261calculated from COD 9012064
Source structureCOD 9012064 (Materials Research Bulletin, 1993) — 1 of 4 structures

Powder X-ray diffraction (calculated)

2θ (degrees, Cu Kα1)I/I₀ (max 100)
d (Å)3.2272.3772.1971.8161.41.491
I/I₀10040.23619.716.816.5

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9012064; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)7.834 g/cm³calculated from COD 9012064

Chemistry (calculated)

Molecular weight800.76 g/molcalculated from the IMA formula
Composition (wt%)Bi 52.2%, Te 47.8%

Classification

Nickel-Strunz (10th)2.DC.05Wikidata (CC0)
Nickel-Strunz (9th)2.DC.05cWikidata (CC0)