Mineral phase
IMA name
Tellurium
IMA Code
Te
Class
native element
Compound type
elemental mineral
Formula
Te
Chemical formula
Te
Elemental formula
Te
Isotope mixture type
terrestrial abundance
  Formula Name Family Number min-max Isotope mole fraction State Relevance
Te Tellurium element 1 constituent element main

Strunz

Class
elements (01)
Division
metalloids and nonmetals (01.C)
Family
Sulfur-selenium-iodine (01.CC)
Code
01.CC.10

Dana

Major class
native elements (I)
Class
native elements (01)
Type
with semi-metallic and non-metallic elements (01.03)
Group
-Selenium- group (01.03.04)
Code
01.03.04.02
Phase type
crystalline
Crystal system
trigonal
Crystal class
trapezohedral
Crystal class symbol
32 (D3)
Crystal spacegroup
P3(1)21
Molar mass
127.60 g/mol
Density
6.2 g/cm3
State NTP
solid
Phase transitions
Phase transition type Other phases Temperature - Pressure
solid-liquid liquid 449.51°C (722.67 K)
Refringence type
uniaxial
Refringence sign
no
Birefringence
0
Pure color
white
Color
white, grayish white, silver gray
Diaphaneity
opaque
Luster
metallic