Triclinic refers to a crystal system, which is a classification based on the symmetry and angles of a crystal's unit cell. A unit cell is the smallest repeating unit that makes up the crystal lattice.

Here's how it works:

* Minerals are naturally occurring, solid, inorganic substances with a specific chemical composition and a defined internal structure.

* Crystal systems are geometric classifications that describe the symmetry and angles of crystals.

Therefore, a triclinic crystal simply describes a mineral's crystallographic structure.

Examples of minerals that crystallize in the triclinic system include:

* Kyanite

* Microcline

* Rhodonite

So, while triclinic refers to a crystal structure, it's not a mineral itself. It's a category that helps us understand the internal organization of certain minerals.