Mineral phase
IMA name
Otavite
Secondary names
Cadmium carbonate; Cd carbonate
IMA Code
Ota
CAS number
513-78-0
Class
non-silicate mineral
Compound type
carbonate
Formula
CdCO3
Chemical formula
CdCO3
Elemental formula
(Cd2+) C O (O-)2
Isotope mixture type
terrestrial abundance
  Formula Name Family Number min-max Isotope mole fraction State Relevance
Cd2+ Cadmium cation element 1 constituent element main
(CO3)2 Carbonate anion chemical function 1 anionic radical main
Chemical functions
  Function Number
(CO3)2 1
Chemical bonds
  Bond Number
Cd2+O 2
CO2/3 3
Oxides
Formula CdO CO2
Mass fraction (%) 74.48 25.52

Strunz

Class
carbonates - nitrates (05)
Division
carbonates without additional anions, without H2O (05.A)
Family
Alkali-earth (and other M2+) carbonates (05.AB)
Code
05.AB.05

Dana

Major class
carbonates, nitrates, borates (V)
Class
anhydrous carbonates (14)
Type
with simple formula A+CO3 (14.01)
Group
Calcite group (Trigonal: R-3c) (14.01.01)
Code
14.01.01.07
Phase type
crystalline
Crystal system
trigonal
Crystal class
ditrigonal-scalenohedral
Crystal class symbol
-3m (D3d)
Crystal spacegroup
R-3c
Molar mass
172.42 g/mol
Density
4.96 - 5.03 (calc.) g/cm3
State NTP
solid
Refringence type
uniaxial
Refringence sign
negative
Birefringence
0.225
Refraction index no (w)
1.830
Refraction index ne (e)
1.605
Pure color
colorless
Color
colorless, white, yellow brown, reddish, reddish white
Diaphaneity
transparent to translucent
Luster
adamantine