Mineral phase
IMA name
Carlinite
IMA Code
Cni
CAS number
1314-97-2
Type
Class
non-silicate mineral
Compound type
sulfide
Chemical composition
Formula
$Tl_2S$
Chemical formula
Tl2S
Elemental formula
Tl2 S
Isotope mixture type
terrestrial abundance
  Formula Name Family Number min-max Isotope mole fraction State Relevance
$Tl$ Thallium element 2 constituent element main
$S$ Sulfur element 1 constituent element main
Chemical bonds
  Bond Number
$\geq Tl-S \mid \leq$ 6

Strunz

Class
sulfides - sufosalts (02)
Division
metal sulfides, M:S sup 1:1 (mainly 2:1) (02.B)
Family
with Hg, Ti (02.BD)
Code
02.BD.25

Dana

Major class
sulfides (II)
Class
sulfides - including selenides and tellurides (02)
Type
where AmBnXp, with (m+n):p=2:1 (02.04)
Group
-Carlinite- group (02.04.13)
Code
02.04.13.01
Phase type
crystalline
Crystal system
trigonal
Crystal class
pyramidal
Crystal class symbol
3 (C3)
Crystal spacegroup
R3
Molar mass
440.83 $g/mol$
Density
8.1 (8.55 calc.) $g/cm^3$
State NTP
solid
Refringence type
uniaxial
Refringence sign
unknown
Birefringence
unknown
Refraction index $n_o$ (w)
1.90 - 1.95 (calc.)
Refraction index $n_e$ (e)
unknown
Pure color
black
Color
dark gray, black
Diaphaneity
opaque
Luster
metallic
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