 | This is a non-diffusing subcategory of Category:Tetragonal 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 P4mm (No. 99) space group symmetry of the tetragonal crystal system.
Pages in category "Minerals in space group 99"
This category contains only the following page. This list may not reflect recent changes.