 | This is a non-diffusing subcategory of Category:Orthorhombic 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 C222 (No. 21) space group symmetry of the orthorhombic crystal system.
Pages in category "Minerals in space group 21"
The following 2 pages are in this category, out of 2 total. This list may not reflect recent changes.