Alkaline, Non-disordered, As-Ca-Fe, As-x polyhedra

• As-Ca-F-Fe
• Al-As-Ca-Fe-O
• As-Ca-F-Fe-K
• As-Ca-Fe-K
• magnetic properties
• electronic and electrical properties
• thermal and thermodynamic properties
• conductivity or resistivity
• magnetic transitions
• pnictogen
• alkaline
• non-disordered
• metalloid
• transitional
• orthorhombic
• tetragonal
• monoclinic