Rock salt is considered soft.
Based on the Mohs Hardness Scale, which rates minerals from 1 (softest) to 10 (hardest), rock salt has a hardness of 2.5. This indicates that it's a relatively soft mineral. According to the provided reference, this means it is a very soft mineral that is approximately the same hardness as your fingernail.
Understanding the Hardness of Rock Salt
- Mohs Hardness Scale: Rock salt's rating of 2.5 on the Mohs scale clarifies its softness compared to other minerals.
- Scratch Test: The reference indicates that you can scratch rock salt with common items like a copper penny, pocketknife, or steel file, further proving its softness.
Characteristics of Rock Salt
| Characteristic | Description |
|---|---|
| Hardness | 2.5 on Mohs scale (soft) |
| Luster | Glassy |
| Streak | White |
| Taste | Salty |
