Constituent
- Name
- Sulfur
- IMA name
- Sulfur
- Class
- native element
- Compound type
- elemental mineral
- Relevance
- main - major
- Arrangement
- in multi-phases
- Mass fraction
- 0.33 $\pm$ 0.1
- Formula
- $S_8$
- Chemical formula
- S8
- Elemental formula
- S8
- Isotope mixture type
- terrestrial abundance
- Oxides
-
Formula $S$ Mass fraction (%) 100.0
Strunz
- Class
- elements (01)
- Division
- metalloids and nonmetals (01.C)
- Family
- Sulfur-selenium-iodine (01.CC)
- Code
- 01.CC.05
Dana
- Major class
- native elements (I)
- Class
- native elements (01)
- Type
- with semi-metallic and non-metallic elements (01.03)
- Group
- Sulfur Polymorph group (01.03.05)
- Code
- 01.03.05.01
- Phase name
- alpha-sulfur
- Phase type
- crystalline
- Crystal system
- orthorhombic
- Crystal class
- dipyramidal
- Crystal class symbol
- mmm (D2h)
- Crystal spacegroup
- Fddd
- Molar mass
- 256.53 $g/mol$
- Density
- 2.05 - 2.09 $g/cm^3$
- Refringence type
- biaxial
- Refringence sign
- positive
- Birefringence
- 0.2873
- Refraction index $n_{\alpha}$
- 1.9579
- Refraction index $n_{\beta}$
- 2.0377
- Refraction index $n_{\gamma}$
- 2.2452
- Dispersion V
- relatively weak
- Color
- yellow, yellowish brown, yellowish gray, reddish, greenish
- Diaphaneity
- transparent to translucent
- Luster
- resinous