This is a non-diffusing subcategory of Category:Monoclinic minerals. It includes minerals that can also be found in the parent category, or in diffusing subcategories of the parent.

This category lists minerals that display the C2/c (No. 15) space group symmetry of the monoclinic crystal system. This also includes A2/a, B2/b, I2/a, and F2/d.