Input interpretation
![ferruccite (mineral) | Mohs hardness](../image_source/7d0ef7b7b9ba61a0c941e94b8d433f30.png)
ferruccite (mineral) | Mohs hardness
Result
![3](../image_source/05e163fda178052d615e53dda9c26e93.png)
3
Hardness comparisons
![harder than a fingernail (Mohs 2.5)](../image_source/af05c137e88c1566476d522f4c37794a.png)
harder than a fingernail (Mohs 2.5)
![softer than a copper penny (Mohs 3.5)](../image_source/a680a45c2ea40a9748c91a3289aba1ae.png)
softer than a copper penny (Mohs 3.5)