Mineral phase
IMA name
Bismite
IMA Code
Bis
Type
Class
non-silicate mineral
Compound type
oxide
Chemical composition
Formula
$Bi_2O_3$
Chemical formula
Bi2O3
Elemental formula
Bi2 O3
Isotope mixture type
terrestrial abundance
  Formula Name Family Number min-max Isotope mole fraction State Relevance
$Bi$ Bismuth element 2 constituent element main
$O$ Oxygen element 3 constituent element main
Chemical bonds
  Bond Number
$ >Bi-O-$ 6
Oxides comments
Bi2O3 = 100%

Strunz

Class
oxides - hydroxides - arsenites (04)
Division
metal:oxygen = 2:3, 3:5, and similar (04.C)
Family
with medium-sized cations (04.CB)
Code
04.CB.60

Dana

Major class
oxides and hydroxides (III)
Class
simple oxides (04)
Type
with a cation charge of 3+ (A+++2O3) (04.03)
Group
Claudetite group (04.03.10)
Code
04.03.10.02
Phase type
crystalline
Crystal system
monoclinic
Crystal class
prismatic
Crystal class symbol
2/m (C2h)
Crystal spacegroup
P2(1)/c
Molar mass
465.96 $g/mol$
Density
8.5 - 9.5 $g/cm^3$
State NTP
solid
Refringence type
uniaxial
Refringence sign
negative
Birefringence
0.1800
Refraction index $n_o$ (w)
2
Refraction index $n_e$ (e)
1.82
Pure color
yellow
Color
green yellow, gray green, yellow
Diaphaneity
transparent to translucent
Luster
adamantine
Links