Here's why:

* Mineral acids are derived from inorganic sources, typically from minerals. Examples include hydrochloric acid (HCl), sulfuric acid (H₂SO₄), and nitric acid (HNO₃).

* Citric acid is an organic acid, meaning it is derived from living organisms. It is found naturally in citrus fruits like lemons and limes.

While citric acid is an acid, it's classified as an organic acid due to its origin and structure.