Category:Minerals in space group 191
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This category lists minerals that display the P6/mmm (No. 191) space group symmetry of the hexagonal crystal system.
This is a non-diffusing subcategory of Category:Hexagonal minerals.
It includes minerals that can also be found in the parent category, or in diffusing subcategories of the parent.
It includes minerals that can also be found in the parent category, or in diffusing subcategories of the parent.