Constituent
Name
Nahcolite
IMA name
Nahcolite
Class
non-silicate mineral
Compound type
carbonate
Chemical composition
Formula
NaHCO3
Chemical formula
NaHCO3
Elemental formula
(Na+) C O2 (O-) H
Isotope mixture type
terrestrial abundance
  Formula Name Family Number min-max Isotope mole fraction State Relevance
Na⁺ Sodium cation element 1 constituent cation main
(HCO3)- Bicarbonate anion chemical function 1 anionic radical main
Chemical functions
  Function Number
(HCO3)- 1
Chemical bonds
  Bond Number
…C…O-1/2 2
……C-O 1
Na⁺ · O-- 1
-O-H 1
Oxides
Formula Na2O H2O CO2
Mass fraction (%) 36.89 10.72 52.39

Strunz

Class
carbonates - nitrates (05)
Division
carbonates without additional anions, without H2O (05.A)
Family
Alkali carbonates (05.AA)
Code
05.AA.15

Dana

Major class
carbonates, nitrates, borates (V)
Class
acid carbonates (13)
Type
with miscellaneous formulae (13.01)
Group
-Nahcolite- group (13.01.01)
Code
13.01.01.01
Phase type
crystalline
Crystal system
monoclinic
Crystal class
prismatic
Crystal class symbol
2/m (C2h)
Crystal spacegroup
P2(1)/c
Molar mass
84.01 g/mol
Density
2.21 g/cm3
Refringence type
biaxial
Refringence sign
negative
Birefringence
0.206
Refraction index nα
1.377
Refraction index nβ
1.503
Refraction index nγ
1.583
Color
colorless, white, gray, brown, black
Diaphaneity
transparent to translucent
Luster
vitreous