The crystal structure of akatoreite, Mn92+Al2Si8O24(OH)8, a 8.337(2), b 10.367(2), c 7.629(1) angstrom, alpha 104.46(1), beta 93.81(2), gamma 104.18(1)degrees, V 613.2(2) angstrom3, P1BAR, Z = 1, has been solved by direct methods and refined to an R index of 2.9% ...