Sulfur
| Colour | Yellow |
|---|---|
| Mohs hardness | 1.5–2.5 |
| Lustre | Resinous to greasy |
| Streak | White |
| Crystal system | Orthorhombic |
| Transparency | Transparent to translucent |
| Cleavage | Poor |
| Fracture | Conchoidal to uneven |
| Chemical formula | S |
| Specific gravity | 2.07 |
What is Sulfur?
Sulfur (American spelling and the preferred IUPAC name) or sulphur (Commonwealth spelling) is a chemical element; it has symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with the chemical formula S8. Elemental sulfur is a bright yellow, crystalline solid at room temperature.
How to identify Sulfur
- Lustre: Resinous to greasy.
- Hardness: Mohs 1.5–2.5 — soft; a knife will scratch it.
- Streak: White.
- Habit: Orthorhombic crystal system.
Sulfur in different forms
Stones often confused with Sulfur
Frequently asked questions
How hard is Sulfur?
Sulfur is Mohs 1.5–2.5 on the hardness scale.
What colour is Sulfur?
Sulfur is typically yellow.