Mineral phase
IMA name
Kalicinite
IMA Code
Kcn
Type
Class
non-silicate mineral
Compound type
carbonate
Chemical composition
Formula
$KHCO_3$
Chemical formula
KHCO3
Elemental formula
(K+) C O2 (O-) H
Isotope mixture type
terrestrial abundance
  Formula Name Family Number min-max Isotope mole fraction State Relevance
$K^+$ Potassium(1+) cation element 1 constituent cation main
$(HCO_3)^{-}$ Bicarbonate anion chemical function 1 anionic radical main
Chemical functions
  Function Number
$(HCO_3)^{-}$ 1
Chemical bonds
  Bond Number
$K^+ \cdot O^{-}-$ 1
$\dddot - C \dddot - O^{-1/2}$ 2
$\dddot - \dddot - C-O$ 1
$-O-H$ 1
Oxides
Formula $K_{2}O$ $H_{2}O$ $CO_{2}$
Mass fraction (%) 47.04 9.0 43.96

Strunz

Class
carbonates - nitrates (05)
Division
carbonates without additional anions, without H2O (05.A)
Family
Alkali carbonates (05.AA)
Code
05.AA.20

Dana

Major class
carbonates, nitrates, borates (V)
Class
acid carbonates (13)
Type
with miscellaneous formulae (13.01)
Group
-Kalicinite- group (13.01.02)
Code
13.01.02.01
Phase type
crystalline
Crystal system
monoclinic
Crystal class
prismatic
Crystal class symbol
2/m (C2h)
Crystal spacegroup
P2(1)/c
Molar mass
100.115 $g/mol$
Density
2.168 $g/cm^3$
State NTP
solid
Phase transitions
Phase transition type Other phases Temperature - Pressure
solid-liquid decomposition liquid 292 °C (565 K)
Refringence type
biaxial
Refringence sign
negative
Birefringence
0.1980
Refraction index $n_{\alpha}$
1.38
Refraction index $n_{\beta}$
1.482
Refraction index $n_{\gamma}$
1.578
Pure color
colorless
Color
colorless, yellowish, yellowish white, white
Diaphaneity
transparent
Luster
vitreous
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