Fe10O19F is Hydrophilite-derived structured and crystallizes in the orthorhombic Amm2 space group. There are six inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(3), one O(7), two equivalent O(4), and one F(1) atom to form FeO5F octahedra that share corners with four equivalent Fe(6)O5F octahedra, corners with four equivalent Fe(4)O6 octahedra,  an edgeedge with one Fe(1)O5F octahedra, and  an edgeedge with one Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-53°. In the second Fe site, Fe(2) is bonded to one O(1), one O(2), one O(7), one O(8), and two equivalent O(5) atoms to form FeO6 octahedra that share corners with four equivalent Fe(4)O6 octahedra, corners with four equivalent Fe(5)O6 octahedra,  an edgeedge with one Fe(1)O5F octahedra, and  an edgeedge with one Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-50°. In the third Fe site, Fe(3) is bonded to two equivalent O(2), two equivalent O(6), and two equivalent O(8) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. In the fourth Fe site, Fe(4) is bonded to one O(1), one O(7), two equivalent O(4), and two equivalent O(5) atoms to form FeO6 octahedra that share corners with four equivalent Fe(1)O5F octahedra, corners with four equivalent Fe(2)O6 octahedra,  an edgeedge with one Fe(6)O5F octahedra, and  an edgeedge with one Fe(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-53°. In the fifth Fe site, Fe(5) is bonded to one O(2), one O(8), two equivalent O(5), and two equivalent O(6) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. In the sixth Fe site, Fe(6) is bonded to one O(3), four equivalent O(4), and one F(1) atom to form FeO5F octahedra that share corners with eight equivalent Fe(1)O5F octahedra and edges with two equivalent Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-53°. There are eight inequivalent O sites. In the first O site, O(7) is bonded in a distorted trigonal planar geometry to one Fe(1), one Fe(2), and one Fe(4) atom. In the second O site, O(8) is bonded in a distorted trigonal planar geometry to one Fe(2), one Fe(3), and one Fe(5) atom. In the third O site, O(1) is bonded in a distorted trigonal planar geometry to one Fe(1), one Fe(2), and one Fe(4) atom. In the fourth O site, O(2) is bonded in a distorted trigonal planar geometry to one Fe(2), one Fe(3), and one Fe(5) atom. In the fifth O site, O(3) is bonded in a trigonal planar geometry to one Fe(6) and two equivalent Fe(1) atoms. In the sixth O site, O(4) is bonded in a trigonal planar geometry to one Fe(1), one Fe(4), and one Fe(6) atom. In the seventh O site, O(5) is bonded in a trigonal planar geometry to one Fe(2), one Fe(4), and one Fe(5) atom. In the eighth O site, O(6) is bonded in a trigonal planar geometry to one Fe(3) and two equivalent Fe(5) atoms. F(1) is bonded in a distorted trigonal planar geometry to one Fe(6) and two equivalent Fe(1) atoms.
Fe10O19F is Hydrophilite-derived structured and crystallizes in the orthorhombic Amm2 space group. There are six inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(3), one O(7), two equivalent O(4), and one F(1) atom to form FeO5F octahedra that share corners with four equivalent Fe(6)O5F octahedra, corners with four equivalent Fe(4)O6 octahedra,  an edgeedge with one Fe(1)O5F octahedra, and  an edgeedge with one Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-53°. The Fe(1)-O(1) bond length is 1.95 Å. The Fe(1)-O(3) bond length is 1.94 Å. The Fe(1)-O(7) bond length is 1.95 Å. Both Fe(1)-O(4) bond lengths are 2.01 Å. The Fe(1)-F(1) bond length is 2.07 Å. In the second Fe site, Fe(2) is bonded to one O(1), one O(2), one O(7), one O(8), and two equivalent O(5) atoms to form FeO6 octahedra that share corners with four equivalent Fe(4)O6 octahedra, corners with four equivalent Fe(5)O6 octahedra,  an edgeedge with one Fe(1)O5F octahedra, and  an edgeedge with one Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-50°. The Fe(2)-O(1) bond length is 1.91 Å. The Fe(2)-O(2) bond length is 1.92 Å. The Fe(2)-O(7) bond length is 1.92 Å. The Fe(2)-O(8) bond length is 1.92 Å. Both Fe(2)-O(5) bond lengths are 2.02 Å. In the third Fe site, Fe(3) is bonded to two equivalent O(2), two equivalent O(6), and two equivalent O(8) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. Both Fe(3)-O(2) bond lengths are 1.93 Å. Both Fe(3)-O(6) bond lengths are 2.02 Å. Both Fe(3)-O(8) bond lengths are 1.93 Å. In the fourth Fe site, Fe(4) is bonded to one O(1), one O(7), two equivalent O(4), and two equivalent O(5) atoms to form FeO6 octahedra that share corners with four equivalent Fe(1)O5F octahedra, corners with four equivalent Fe(2)O6 octahedra,  an edgeedge with one Fe(6)O5F octahedra, and  an edgeedge with one Fe(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-53°. The Fe(4)-O(1) bond length is 2.03 Å. The Fe(4)-O(7) bond length is 2.05 Å. Both Fe(4)-O(4) bond lengths are 1.94 Å. Both Fe(4)-O(5) bond lengths are 1.93 Å. In the fifth Fe site, Fe(5) is bonded to one O(2), one O(8), two equivalent O(5), and two equivalent O(6) atoms to form a mixture of corner and edge-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. The Fe(5)-O(2) bond length is 2.06 Å. The Fe(5)-O(8) bond length is 2.06 Å. Both Fe(5)-O(5) bond lengths are 1.92 Å. Both Fe(5)-O(6) bond lengths are 1.93 Å. In the sixth Fe site, Fe(6) is bonded to one O(3), four equivalent O(4), and one F(1) atom to form FeO5F octahedra that share corners with eight equivalent Fe(1)O5F octahedra and edges with two equivalent Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-53°. The Fe(6)-O(3) bond length is 1.97 Å. All Fe(6)-O(4) bond lengths are 1.95 Å. The Fe(6)-F(1) bond length is 2.11 Å. There are eight inequivalent O sites. In the first O site, O(7) is bonded in a distorted trigonal planar geometry to one Fe(1), one Fe(2), and one Fe(4) atom. In the second O site, O(8) is bonded in a distorted trigonal planar geometry to one Fe(2), one Fe(3), and one Fe(5) atom. In the third O site, O(1) is bonded in a distorted trigonal planar geometry to one Fe(1), one Fe(2), and one Fe(4) atom. In the fourth O site, O(2) is bonded in a distorted trigonal planar geometry to one Fe(2), one Fe(3), and one Fe(5) atom. In the fifth O site, O(3) is bonded in a trigonal planar geometry to one Fe(6) and two equivalent Fe(1) atoms. In the sixth O site, O(4) is bonded in a trigonal planar geometry to one Fe(1), one Fe(4), and one Fe(6) atom. In the seventh O site, O(5) is bonded in a trigonal planar geometry to one Fe(2), one Fe(4), and one Fe(5) atom. In the eighth O site, O(6) is bonded in a trigonal planar geometry to one Fe(3) and two equivalent Fe(5) atoms. F(1) is bonded in a distorted trigonal planar geometry to one Fe(6) and two equivalent Fe(1) atoms.