Hematophanite, a Derivative of the Perovskite Structure1

Hematophanite, a Derivative of the Perovskite Structure¹

R. C. Rouse²

Department of Geology and Mineralogy, The University of Michigan, Ann Arbor, Michigan, U.S.A.

¹Contribution No. 307, The Mineralogical Laboratory, Department of Geology and Mineralogy, The University of Michigan.
²Present address: Dept. of Mineral Sciences, Smithsonian Institution, Washington, D.C. 20560.

Summary: Hematophanite, ideally Pb₄Fe₃O₈Cl, is tetragonal, space group P4mm, with a = 3·92 and c = 15·31 Å. The crystal structure, which has been refined to an R-factor of 9·1 %, may be described as an interlayering of perovskite-like units with a cesium chloride or, alternatively, a nadoritelike unit. The nadorite-like part consists of a double layer of PbO₄Cl₄ distorted square antiprisms. Iron atoms are in 6-fold (tetragonal bipyramidal) and 5-fold (square pyramidal) coordination.

Mineralogical Magazine; March 1973 v. 39; no. 301; p. 49-53; DOI: 10.1180/minmag.1973.039.301.06
© 1973, The Mineralogical Society
Mineralogical Society (www.minersoc.org)